meteor (n.) Look up meteor at Dictionary.com
late 15c., "any atmospheric phenomenon," from Middle French meteore (13c.) and directly from Medieval Latin meteorum (nominative meteora), from Greek ta meteora "the celestial phenomena, things in heaven above," plural of meteoron, literally "thing high up," noun use of neuter of meteoros (adj.) "high up, raised from the ground, hanging," from meta- "over, beyond" (see meta-) + -aoros "lifted, hovering in air," related to aeirein "to raise" (see aorta).

Specific sense of "fireball, shooting star" is attested from 1590s. Atmospheric phenomena were formerly classified as aerial meteors (wind), aqueous meteors (rain, snow, hail), luminous meteors (aurora, rainbows), and igneous meteors (lightning, shooting stars).
sheet (n.1) Look up sheet at Dictionary.com
Old English sciete (West Saxon), scete (Mercian) "cloth, covering, towel, shroud," from Proto-Germanic *skautjon-, from *skauta- "project" (source also of Old Norse skaut, Gothic skauts "seam, hem of a garment;" Dutch schoot; German Schoß "bosom, lap"), from PIE root *skeud- "to shoot, chase, throw" (see shoot (v.)).

Sense of "piece of paper" first recorded c. 1500; that of "any broad, flat surface" (of metal, open water, etc.) is from 1590s. Of falling rain from 1690s. Meaning "a newspaper" is first recorded 1749. Sheet lightning is attested from 1794; sheet music is from 1857. Between the sheets "in bed" (usually with sexual overtones) is attested from 1590s; to be white as a sheet is from 1751. The first element in sheet-anchor (late 15c.) appears to be a different word, of unknown origin.
earthworm (n.) Look up earthworm at Dictionary.com
c. 1400, erþe-worme, from earth + worm (n.). In this sense Old English had eorðmata, also regnwyrm, literally "rain-worm." Old English also had angel-twæcce "earthworm used as bait" (with second element from root of twitch), sometimes used in medieval times as a medicament:
For the blake Jawndes take angylltwacches, er þei go in to the erth in the mornynge and fry hem. Take ix or x small angyltwacches, and bray hem, and giff the syke to drynke fastynge, with stale ale, but loke þat thei bene grounden so small that þe syke may nat se, ne witt what it is, for lothynge. [Book of Medical Recipes in Medical Society of London Library, c. 1450]
libation (n.) Look up libation at Dictionary.com
late 14c., "pouring out of wine in honor of a god," from Latin libationem (nominative libatio) "a drink-offering," noun of action from past participle stem of libare "pour out (an offering)," from PIE *(s)leib- "to pour, drop" (source of Greek leibein "to pour, make a libation").

This is from an enlargement of the PIE root *lei- "to flow" (source also of Sanskrit riyati "to let run;" Greek aleison "a cup for wine, goblet;" Lithuanian lieju "to pour," lytus "rain;" Hittite lilai- "to let go;" Albanian lyse, lise "a stream;" Welsh lliant "a stream, a sea," llifo "to flow;" Old Irish lie "a flood;" Breton livad "inundation;" Gaelic lighe "a flood, overflow;" Gothic leithu "fruit wine;" Old Church Slavonic liti, lêju, Bulgarian leja "I pour;" Czech liti, leji, Old Polish lić "to pour"). Transferred sense of "liquid poured out to be drunk" is from 1751. Related: Libations.
Jupiter (n.) Look up Jupiter at Dictionary.com
also Juppiter, c. 1200, "supreme deity of the ancient Romans," from Latin Iupeter, Iupiter, Iuppiter, "Jove, god of the sky and chief of the gods," from PIE *dyeu-peter- "god-father" (originally vocative, "the name naturally occurring most frequently in invocations" [Tucker]), from *deiw-os "god" (see Zeus) + peter "father" in the sense of "male head of a household" (see father (n.)).
The Latin forms Diespiter, Dispiter ... together with the word dies 'day' point to the generalization of a stem *dije-, whereas Iupiter, Iovis reflect [Proto-Italic] *djow~. These can be derived from a single PIE paradigm for '(god of the) sky, day-light', which phonetically split in two in [Proto-Italic] and yielded two new stems with semantic specialization. [de Vaan]
Compare Greek Zeu pater, vocative of Zeus pater "Father Zeus;" Sanskrit Dyaus pitar "heavenly father." As the name of the brightest of the superior planets from late 13c. in English, from Latin (Iovis stella). The Latin word also meant "heaven, sky, air," hence sub Iove "in the open air." As god of the sky he was considered to be the originator of weather, hence Jupiter Pluvius "Jupiter as dispenser of rain" !704), used jocularly from mid-19c.
shower (n.1) Look up shower at Dictionary.com
Old English scur "a short fall of rain, storm, tempest; fall of missiles or blows; struggle, commotion; breeze," from Proto-Germanic *skuraz (source also of Old Norse skur, Old Saxon and Old Frisian scur "fit of illness;" Old High German scur, German Schauer "shower, downpour;" Gothic skura, in skura windis "windstorm"), from PIE root *kew-(e)ro- "north, north wind" (source also of Latin caurus "northwest wind;" Old Church Slavonic severu "north, north wind;" Lithuanian šiaurus "raging, stormy," šiaurys "north wind," šiaure "north").

Of blood, tears, etc., from c. 1400. Of meteors from 1835. Sense of "bath in which water is poured from above" first recorded 1851 (short for shower-bath, itself attested from 1803). Meaning "large number of gifts bestowed on a bride" (1904, American English colloquial) later was extended to the party at which it happens (1926). Shower curtain attested from 1914.
wet (adj.) Look up wet at Dictionary.com
Old English wæt "moist, rainy, liquid," also as a noun. "moisture, liquid drink," from Proto-Germanic *weta- (source also of Old Frisian wet ). Also from cognate Old Norse vatr; all from PIE *wed- (1) "water, wet" (see water (n.1)). Of paint, ink, etc., "not yet dry" from 1510s. Opposed to dry in reference to the U.S. battles over prohibition from 1870. Wet blanket "person who has a dispiriting effect" is recorded from 1871, from use of blankets drenched in water to smother fires (the phrase is attested in this literal sense from 1660s).
Do we not know them, those wet blankets who come down on our pleasant little fires and extinguish them, with no more ruth than the rain feels when it pours on the encampment of the merry picnic party, or floods the tents of a flower show? ["Wet Blankets," in "Godey's Lady's Book and Magazine," February, 1871]
All wet "in the wrong" is recorded from 1923, American English; earlier simply wet "ineffectual," and perhaps ultimately from slang meaning "drunken" (c. 1700). Wet-nurse is from 1610s. The diver's wet-suit is from 1955. Wet dream is from 1851; in the same sense Middle English had ludificacioun "an erotic dream."
He knew som tyme a man of religion, þat gaff hym gretelie vnto chastitie bothe of his harte & of his body noghtwithstondyng he was tempid with grete ludificacions on þe nyght. ["Alphabet of Tales," c. 1450]
soft (adj.) Look up soft at Dictionary.com
Old English softe, earlier sefte, "gentle, mild-natured; easeful, comfortable, calm, undisturbed; luxurious," from West Germanic *samfti, from Proto-Germanic *samftijaz "level, even, smooth, gentle, soft" (source also of Old Saxon safti, Old High German semfti, German sanft; and from a variant form with -ch- for -f-, Middle Dutch sachte, Dutch zacht, German sacht), from root *som- "fitting, agreeable."

From c. 1200 of material things, "not stiff, not coarse, fine; yielding to weight." From late 14c. of wind, rain, etc. Of sounds, "quiet, not loud," from early 13c. Of words, "mild, restrained; courteous" mid-14c. From late 14c. as "indulgent," also "physically feeble; easily overcome, lacking manly courage." From 1755 of water ("relatively free from mineral salts"), from 1789 of coal. Meaning "foolish, simple, silly" is attested from 1620s; earlier "easily moved or swayed; soft-hearted, sympathetic; docile" (early 13c.). In reference to drinks, "non-alcoholic" from 1880. As an adverb, Old English softe "gently;" late 13c. as "quietly." As an interjection from 1540s.

Soft landing is from 1958 and the U.S. space program. Adjective soft-core (in reference to pornography) is from 1966 (see hardcore). Soft rock as a music style is attested from 1969. Soft sell is from 1955. Soft-shoe as a dancing style is attested from 1927. Soft-boiled is from 1757 of eggs; of persons, ideas, etc., 1930 (compare half-baked). Soft-focus (adj.) of camera shots is from 1917. The softer sex "women collectively" is from 1640s.