Online Etymology Dictionary

Sudeten: from German, named for the Sudeten Mountains; mentioned by Ptolemy (2c.) but the name is of unknown origin, perhaps Illyrian.
everyman (n.): name of the leading character in a popular 15c. morality play; from every + man (n.).
sora (n.): small, short-billed North American bird species, the Carolina rail, 1705, probably from a native name.
Somalia: country named for the indigenous Somali people, whose name (attested in English by 1814) is of unknown origin.
Soviet Union: informal name of the Union of Soviet Socialist Republics; in use in U.S. newspapers by October 1919.
Speedo: trademark name of a brand of swimwear, 1928, originally made by McRae Hosiery Manufacturers, Australia. From speed.
tourmaline (n.): complete silicate of aluminum and boron, 1759, from French or German, ultimately from Sinhalese toramalli, a general name for cornelian.
Rollerblade (n.): 1985, a registered proprietary name in U.S., from roller + blade (n.). As a verb by 1988. Related: Rollerblading.
Brenner Pass: historical route over the Alps between Germany and Italy, from Breuni, name of a people who lived near there, perhaps Celtic.
Madge: pet form of fem. proper name Margaret.
MADGE. The private parts of a woman. [Grose, "Dictionary of the Vulgar Tongue," London, 1785]
Mag: common pet form of the fem. proper name Margaret, attested since Middle English. Compare magpie.
lory (n.): small parrot of New Guinea and Australia, 1690s, from Malay luri, name of kind of parrot, variant of nuri.
Macaca: monkey genus, Modern Latin, from Portuguese macaca, fem. of macaco, a name from an African language of the Congo.
Chiang Mai: city in northwest Thailand, founded in 1292; the name is Thai northern dialect chiang "town" + mai "new."
Limoges (n.): painted porcelain or enamel from Limoges in France, 1838; for place name see Limousine.
lull (n.): 1650s as the name of a soothing drink, from lull (v.). Meaning "period of quiet in a storm" is from 1815.
Maurice: masc. proper name, from French Maurice, from Late Latin Mauritius, from Latin Maurus "inhabitant of Mauretania, Moor" (see Moor).
all-American: 1888, as the name of a barnstorming baseball team composed of players from various teams across the United States. From all + American.
Margery: fem. proper name, from Old French Margerie, related to Late Latin margarita "pearl" (see Margaret).
Turkey: country name, late 14c., from Medieval Latin Turchia, from Turcus (see Turk) + -ia.
Petronilla: also Petronella, fem. proper name, a feminine diminutive of Latin Petronius. Also "the name of a saint much-invoked against fevers and regarded as a daughter of St. Peter. The name was accordingly regarded to be a derivative of Peter and became one of the most popular of girls' names, the vernacular Parnell being still used as a proper name as late as the 18th century in Cornwall" [Reaney].
Melchior: masc. proper name, literally "king of light," from Hebrew melekh "king" + or "light."
monotype (n.): 1881 in biology; 1882 in printers' arts; 1893 as a brand name of typesetting machine; see mono- + type.
Cinerama (n.): proprietary name, 1951, from cinema + -rama. Purists point out that the proper formation would be *Cinorama.
Nick: masc. proper name, familiar form of Nicholas. As "the devil" by 1640s, but the reason for it is obscure.
nod (n.): mid-15c., from nod (v.). Land of Nod "sleep" is a pun on the biblical place name (Gen. iv:16).
Navarre: a pre-Latin name, probably based on Basque nava "plain," despite the region's mountainous topography.
Panavision (n.): 1955, proprietary name of a type of wide-screen lens, word formed from elements of panorama + vision.
Mystic: place name in Connecticut, U.S., deformed from Algonquian missituk "great tidal river," from missi "large" + -tuk "tidal river."
Scrabble (n.): board game, 1949, proprietary name (registered U.S.), probably from scribble-scrabble "hasty writing" (1580s), a reduplication of scribble (n.).
Chian (adj.): "pertaining to the Greek island of Chios," 1630s. The island name is of uncertain origin, perhaps related to Greek khion "snow."
Cicely: fem. proper name, an alteration or nativization of Cecilia. The plant (late 16c.) is Latin seselis, from Greek seselis.
citrine (adj.): lemon-colored, late 14c., from French citrin, from Latin citrus (see citrus). From 1879 as a color name.
Cleon: masc. proper name, from Latinized form of Greek kleon, kleos "fame" (see Clio).
clepe (v.): "to call; to name" (archaic), from Old English cleopian, clipian "to speak, call; summon, invoke; implore."
Soundex (n.): phonetic coding system, 1959, from sound (n.1) + brand-name suffix -ex.
Sauk (2): southern Coastal Salishan group of Native Americans, from a native Lushootseed name, probably folk-etymologized by influence of Sauk (1).
Selina: fem. proper name, nativized form of French Céline, from Latin caelina "heavenly," from caelum (see celestial).
Sinon: name of the Greek who induced the Trojans to take the wooden horse into the city; hence "a deceiver by false tales."
rosewood (n.): 1650s, from rose (n.1) + wood (n.). The name is due to the scent of some species when freshly cut.
Sabin: in reference to polio vaccine, 1955, from name of Russian-born U.S. microbiologist Albert B. Sabin (1906-1993).
sans souci (adv.): "without care or concern," French. Name of Frederick the Great's royal palace at Potsdam.
Shasta: mountain in California, named for local native tribe, for whose name Bright offers no etymology.
Szechwan: also Szechuan, place name, said to mean "four rivers," from Chinese si "four" + chuan "river."
Sukey: also Sukie, familiar form of fem. proper name Susan, Susanna. As "a tea kettle" from 1823.
Thrace: Greek Thrake, named for the people who inhabited it, whose name is of unknown origin, perhaps Semitic. Related: Thracian.
thuggery (n.): 1839, from thug + -ery. Also thugee, from the native Hindi name for the system of religious assassination practiced by the thugs.
Toledo: city in Spain, famous from 16c. for its sword-blades of fine temper; the place name is Celtic, from tol "hill."
Urania: name of the Muse of astronomy and celestial forces, from Latin Urania, from Greek Ourania, fem. of ouranios, literally "heavenly," from ouranos (see Uranus).
Urban: masc. proper name, from Latin urbanus "refined, courteous," literally "of a city" (see urban (adj.)).