Online Etymology Dictionary

malthouse (n.): late Old English mealthus; see malt (n.) + house (n.).
playhouse (n.): late Old English pleghus; see play (n.) + house (n.).
hausfrau (n.): 1798, from German Hausfrau, literally "housewife;" see house (n.) + frau.
gambling (n.): 1784, "habitual indulgence in gambling," verbal noun from gamble (v.). Gambling-house attested by 1794.
outhouse (n.): early 14c., "shed, outbuilding," from out + house (n.). Sense of "a privy" (principally American English) is first attested 1819.
courthouse (n.): late 15c., from court (n.) + house (n.). In Virginia and the Upper South, it also can mean "county seat."
powerhouse (n.): 1873, "building where power is generated," from power (n.) + house (n.). Figurative sense is from 1913.
bughouse: 1902 (n.) "insane asylum;" 1891 (adj.) "insane," from bug (n.) + house (n.); perhaps originally tramps' slang.
roadhouse (n.): "inn by a roadside," 1857, later "place for refreshment and entertainment along a road" (1922), from road (n.) + house (n.).
lighthouse (n.): tower exhibiting lights to warn mariners of rocks, shoals, etc., 1620s, from light (n.) + house (n.).
husband (n.): Old English husbonda "male head of a household, master of a house, householder," probably from Old Norse husbondi "master of the house," literally "house-dweller," from hus "house" (see house (n.)) + bondi "householder, dweller, freeholder, peasant," from buandi, present participle of bua "to dwell" (see bower). Beginning late 13c. it replaced Old English wer as "married man (in relation to his wife)" and became the companion word of wife, a sad loss for English poetry. Slang shortening hubby first attested 1680s.
orphanage (n.): 1570s, "condition of being an orphan," from orphan (n.) + -age. Meaning "home for orphans" is from 1865 (earlier was orphan house, 1711).
hothouse (n.): mid-15c., "bath house," from hot + house (n.). In 17c. a euphemism for "brothel;" the meaning "glass-roofed structure for raising tender plants or protecting exotics" is from 1749. Figurative use of this sense by 1802.
doghouse (n.): 1610s, from dog (n.) + house (n.). Originally a kennel; the backyard type, for a single animal, is late 19c. Figurative sense of "disgrace" is from 1932.
warehouse (n.): mid-14c., from ware (n.) + house. Compare Dutch warenhuis, German warenhaus. Meaning "large impersonal institution" is American English colloquial, first attested 1970.
barrelhouse (n.): "cheap saloon, often with an associated brothel," by 1875, American English, so called in reference to the barrels of beer or booze typically stacked along the wall. See barrel (n.) + house (n.).
Q. What was this place you rented? -- A. It was a room adjoining a barrel-house.
Q. What is a barrel house? -- A. It is a room where barrels of whisky are tapped, a very inferior kind of whisky, and the whisky is sold by the glassful right out of the barrel. It is a primitive coffee house. [Committee Report of the 43rd Congress, Select Committee on Conditions of the South, 1874-75]
flophouse (n.): "cheap hotel," hobo slang, 1904, probably related to slang flop (v.) "lie down for sleep" (1907); see flop (v.) + house (n.). The explanation below is not found in other early references.
In one of [Cincinnati's] slum districts stands the Silver Moon, a "flop house" (i.e., a house where the occupants are "flopped" out of their hanging bunks by letting down the ropes) .... ["McClure's" magazine, November 1904]
haunted (adj.): early 14c., "accustomed;" mid-14c., "stirred, aroused;" early 15c., "frequent;" 1570s, "much-frequented;" past participle adjective from haunt (v.). Meaning "visited by ghosts" is from 1711; haunted house attested by 1733.
townhouse (n.): 1825, "a residence in a town," from town + house (n.) from a time when well-off families had country houses as well. As a type of suburban attached housing, c. 1968, American English.
workhouse (n.): Old English weorchus "workshop;" see work (n.) + house (n.). From 1650s in the sense of "place where the able-bodied poor or petty criminals are lodged and compelled to work."
Bauhaus (n.): 1923, from German Bauhaus, literally "architecture-house;" school of design founded in Weimar, Germany, 1919 by Walter Gropius (1883-1969), later extended to the principles it embodied. First element is bau "building, construction, structure," from Old High German buan "to dwell" (see bound (adj.2)). For second element, see house (n.).
caboose (n.): 1747, "ship's cookhouse," from Middle Dutch kambuis "ship's galley," from Low German kabhuse "wooden cabin on ship's deck;" probably a compound whose elements correspond to English cabin and house (n.). Railroading sense is by 1859.
hustings (n.): Old English husting "meeting, court, tribunal," from Old Norse husðing "council," from hus "house" (see house (n.)) + ðing "assembly" (see thing); so called because it was a meeting of the men who formed the "household" of a nobleman or king. The native Anglo-Saxon word for this was folc-gemot. The plural became the usual form c. 1500; sense of "temporary platform for political speeches" developed by 1719, apparently from London's Court of Hustings, presided over by the Lord Mayor, which was held on a platform in the Guildhall. This sense then broadened by mid-19c. to "the election process generally."
housing (n.2): "ornamental covering," c. 1300, houce "covering for the back and flanks of a horse," from Old French houce "mantle, horse-blanket" (Modern French housse), from Medieval Latin hultia "protective covering," from a Germanic source, from Proto-Germanic *hulfti (source also of Middle Dutch hulfte "pocket for bow and arrow," Middle High German hulft "covering"), from PIE root *kel- (2) "to cover, conceal" (see cell). Sense of "case or enclosure for machine or part" is first recorded 1882, verbal noun from house (v.).
gaming (n.): c. 1500, "gambling," verbal noun from game (v.). From 1980s in reference to video and computer games. Gaming-house is from 1620s; gaming-table from 1590s.
split-level (adj.): 1951 as a type of building plan, from split (adj.) + level (n.). As a noun from 1954, short for split-level house, etc.
boarding (n.): 1530s, "supplying of meals, food and lodging," from board (n.1) in its extended sense of "food" (via notion of "table"). Boarding-school is from 1670s; boarding-house attested from 1728.
disorderly (adj.): 1580s, "opposed to moral order," also "opposed to legal authority;" see dis- + orderly (adj.). The meaning "untidy" is attested from 1630s; the older senses are those in disorderly house, disorderly conduct, etc.
pub (n.): 1859, slang shortening of public house (see public (adj.)), which originally meant "any building open to the public" (1570s), then "inn that provides food and is licensed to sell ale, wine, and spirits" (1660s), and finally "tavern" (1768). Pub crawl first attested 1910 in British slang.
roundhouse (n.): also round-house, "lock-up, place of detention," 1580s, from Dutch rondhuis "guardhouse." Meaning "circular shed for locomotives with a turntable in the center" is from 1856. Meaning "blow delivered with a wide sweep of the arm" is perhaps extended from "round building for circular machinery."
brothel (n.): "bawdy house," 1590s, shortened from brothel-house, from brothel "prostitute" (late 15c.), earlier "vile, worthless person" of either sex (14c.), from Old English broðen past participle of breoðan "deteriorate, go to ruin," from Proto-Germanic *breuthan "to be broken up," related to *breutan "to break" (see brittle). In 16c. brothel-house was confused with unrelated bordel (see bordello) and the word shifted meaning from a person to a place.
halfway (adv.): also half-way, Old English healfweg; see half + way (n.). Halfway house originally was a common name for inns midway between cities or stages.
lock-up (n.): "detention cell for offenders," 1838, perhaps short for earlier lock-up house; from lock (v.) + up. Meaning "action of locking up" is from 1845. The verbal phrase lock up is recorded from early 15c.
room (v.): "to occupy rooms" (especially with another) as a lodger," 1828, from room (n.). Related: Roomed; rooming. Rooming-house is from 1889. In Old English (rumian) and Middle English the verb meant "become clear of obstacles; make clear of, evict."
beautiful (adj.): mid-15c., "pleasing to the eye," from beauty + -ful. The beautiful people "the fashionable set" first attested 1964 in (where else?) "Vogue" (it also was the title of a 1941 play by U.S. dramatist William Saroyan). House Beautiful is from "Pilgrim's Progress," where it is a proper name of a place. Related: Beautifully.
HUAC (n.): 1950, American English, approximate acronym for House Committee to Investigate un-American Activities (1938-1975).
portobello: type of mushroom, by 1986, no agreed-upon theory accounts for the name, which seems to be a marketing coinage. London's Portobello Road (one suggested source of the mushroom name) originally was the lane to Porto Bello House, named for the Panamanian place captured by the British under Vernon in 1739.
charnel (adj.): late 14c., from Old French charnel (12c.) "fleshly," from Late Latin carnale "graveyard," properly neuter of adjective carnalis (see carnal). As an adjective from 1813. The Late Latin word was glossed in Old English as flæschus "flesh-house." Charnel house is attested from 1550s.
penitentiary (n.): early 15c., "place of punishment for offenses against the church," from Medieval Latin penitentiaria, from fem. of penitentiarius (adj.) "of penance," from Latin paenitentia "penitence" (see penitence). Meaning "house of correction" (originally an asylum for prostitutes) is from 1806, short for penitentiary house (1776). Slang shortening pen is attested from 1884.
tenement (n.): c. 1300, "holding of immovable property" (such as land or buildings,) from Anglo-French (late 13c.), Old French tenement "fief, land, possessions, property" (12c.), from Medieval Latin tenementum "a holding, fief" (11c.), from Latin tenere "to hold" (see tenet). The meaning "dwelling place, residence" is attested from early 15c.; tenement house "house broken up into apartments, usually in a poor section of a city" is first recorded 1858, American English, from tenement in an earlier sense (especially in Scotland) "large house constructed to be let to a number of tenants" (1690s).
ranch (n.): 1808, "country house," from American Spanish rancho "small farm, group of farm huts," from Spanish rancho "mess-room," originally, "group of people who eat together," from ranchear "to lodge or station," from Old French ranger "install in position," from rang "row, line" (see rank (n.)).

Sense of "large stock-farm and herding establishment" is from 1831. Of houses, "single-story, split-level" (adj.) from 1950; as a noun from 1960. Ranch-house attested from 1862.
lumber (n.): "timber sawn into rough planks," 1660s, American English (Massachusetts), earlier "disused bit of furniture; heavy, useless objects" (1550s), probably from lumber (v.), perhaps influenced by Lombard, from the Italian immigrants famous as pawnbrokers and money-lenders in England (see Lombard). Lumbar, Lumbard were old alternative forms of Lombard in English. The evolution of sense then would be because a lumber-house ("pawn shop") naturally accumulates odds and ends of furniture.
Live Lumber, soldiers or passengers on board a ship are so called by the sailors. [Grose, "Dictionary of the Vulgar Tongue," 1785]

LUMBER HOUSE. A house appropriated by thieves for the reception of their stolen property. ["Dictionary of Buckish Slang, University Wit, and Pickpocket Eloquence," London, 1811]
dairy (n.): late 13c., "building for making butter and cheese; dairy farm," formed with Anglo-French -erie affixed to Middle English daie (in daie maid "dairymaid"), from Old English dæge "kneader of bread, housekeeper, female servant" (see dey (n.1)). The purely native word was dey-house.
penthouse (n.): pendize, early 14c., from Anglo-French pentiz, a shortening of Old French apentis "attached building, appendage," from Medieval Latin appendicium, from Latin appendere "to hang" (see append). Modern spelling is from c. 1530, by folk etymology influence of Middle French pente "slope," and English house (the meaning at that time was "attached building with a sloping roof or awning"). Originally a simple structure (Middle English homilies describe Jesus' birthplace in the manger as a "penthouse"); meaning "apartment or small house built on the roof of a skyscraper" first recorded 1921, from which time dates its association with luxury.
publican (n.): c. 1200, "tax-gatherer," from Old French publician (12c.), from Latin publicanus "a tax collector," noun use of an adjective, "pertaining to public revenue," from publicum "public revenue," noun use of neuter of publicus (see public (adj.)). Original sense in Matt. xviii:17, etc.; meaning "keeper of a pub" first recorded 1728, from public (house) + -an.
steeple (n.): Old English stepel (Mercian), stiepel (West Saxon) "high tower," related to steap "high, lofty," from Proto-Germanic *staupilaz (see steep (adj.)). Also the name of a lofty style of women's head-dress from the 14th century. Steeple-house (1640s) was the old Quaker way of referring to "a church edifice," to avoid in that sense using church, which had with them a more restricted meaning.
correction (n.): mid-14c., "action of correcting," from Old French correccion (13c.) "correction, amendment; punishment, rebuke," from Latin correctionem (nominative correctio), noun of action from past participle stem of corrigere "to put straight; to reform" (see correct (v.)). Meaning "chastisement" is from late 14c. Meaning "an instance of correction" is from 1520s. House of correction was in a royal statute from 1575.
Lloyd: male proper name, from Welsh Llwyd, literally "gray," from PIE *pel- (2) "pale" (see pallor). Lloyd's, meaning the London-based association of marine underwriters, is first recorded as such 1805, from Lloyd's Coffee House, London, opened in 1688 by Edward Lloyd, who supplied shipping information to his patrons; merchants and underwriters met there to do business.
carriage (n.): late 14c., "act of carrying, means of conveyance; wheeled vehicles collectively," from Anglo-French and Old North French cariage "cart, carriage, action of transporting in a vehicle" (Old French charriage, Modern French charriage), from carier "to carry" (see carry (v.)). Meaning "individual wheeled vehicle" is c. 1400; specific sense of "horse-drawn, wheeled vehicle for hauling people" first attested 1706; extended to railway cars by 1830. Meaning "way of carrying one's body" is 1590s. Carriage-house attested from 1761.
met (v.): past tense and past participle of meet (v.). Old English long vowels tended to shorten before many consonant clusters. Hence meet/met (earlier mette), five/fifteen, house/husband, break/breakfast.