slapshot (n.)youdaoicibaDictYouDict[slapshot 词源字典]
in ice hockey, 1942, from slap (v.) + shot (n.).[slapshot etymology, slapshot origin, 英语词源]
slapstick (n.)youdaoicibaDictYouDict
also slap-stick, originally (1896) a device consisting of two sticks fastened together so as to slap loudly when a clown or actor hits somebody with it, or to make a sound-effect offstage; from slap and stick (n.). As an adjective by 1906. Meaning "farcical physical comedy, horseplay" (1916) is short for slapstick comedy or humor.
slash (v.)youdaoicibaDictYouDict
1540s, "to cut with a stroke of a blade or whip;" 1650s, "to strike violently," perhaps from Middle French esclachier "to break," variant of esclater "to break, splinter" (see slat). Meaning "to clear land" (of trees) is from 1821, American English. In reference to prices, it is attested from 1906. Related: Slashed; slashing. Slash-and-burn for a method of clearing forest for cultivation is from 1919.
slash (n.)youdaoicibaDictYouDict
"a cutting stroke with a weapon," 1570s, from slash (v.); sense of "slit in a garment" is from 1610s; that of "open tract in a forest" is first attested 1825, American English. As a punctuation mark in writing or printing, it is recorded from 1961.
slasher (n.)youdaoicibaDictYouDict
1550s, "a bully, a fighter;" 1815, "weapon for slashing," agent noun from slash (v.). As "violent movie" by 1978.
slat (n.)youdaoicibaDictYouDict
late 14c., earlier sclat (c. 1300), "a roofing slate, a thin, flat stone," from Old French esclat "split piece, chip, splinter" (Modern French éclat), back-formation from esclater "to break, splinter, burst," probably from Frankish *slaitan "to tear, slit" or some other Germanic source (compare Old High German slizan, Old English slitan; see slit (v.)). Meaning "long, thin, narrow piece of wood or metal" attested from 1764.
slate (n.)youdaoicibaDictYouDict
mid-14c., from Old French esclate, fem. of esclat "split piece, splinter" (Modern French éclat; see slat), so called because the rock splits easily into thin plates. As an adjective, 1510s. As a color, first recorded 1813. Sense of "a writing tablet" (made of slate), first recorded late 14c., led to that of "list of preliminary candidates prepared by party managers," first recorded 1842, from notion of being easily altered or erased. Clean slate (1856) is an image from customer accounts chalked up in a tavern.
slate (v.)youdaoicibaDictYouDict
1520s, "to cover with slates" (earlier sclatten, late 15c.), from slate (n.). Meaning "propose, schedule" is from 1883; earlier "to nominate" (1804); the notion is of writing on a slate board. Related: Slated; slating.
slater (n.)youdaoicibaDictYouDict
"one who makes or lays slates," c. 1400 (mid-13c. as a surname), agent noun from slate.
slather (v.)youdaoicibaDictYouDict
"spread liberally," 1847, of uncertain origin. Early 19c. local glossaries from western England have the word with a sense "to slip or slide."
Slather on the manure on all the hoed crops, if you have it; if not buy of your improvident neighbor. ["Genesee Farmer," June 1847]
Sometimes said to be from a dialectal noun meaning "large amount" (usually as plural, slathers), but this is first attested 1855. Related: Slathered; slathering.
slattern (n.)youdaoicibaDictYouDict
1630s, "a woman negligent or disordered in her dress or household," of uncertain origin, probably related to Low German Slattje, Dutch slodder, dialectal Swedish slata "slut" (in the older, non-sexual sense; compare slut). Compare dialectal English verb slatter "to spill or splash awkwardly, to waste," used of women or girls considered untidy or slovenly.
slatternly (adj.)youdaoicibaDictYouDict
1670s, from slattern + -ly (1).
slaughter (n.)youdaoicibaDictYouDict
c. 1300, "killing of a cattle or sheep for food, killing of a person," from a Scandinavian *slahtr, akin to Old Norse slatr "a butchering, butcher meat," slatra "to slaughter," slattr "a mowing" from Proto-Germanic *slukhtis, related to Old Norse sla "to strike" (see slay (v.)) + formative suffix (as in laugh/laughter). Meaning "killing of a large number of persons in battle" is attested from mid-14c. Old English had slieht "stroke, slaughter, murder, death; animals for slaughter;" as in sliehtswyn "pig for killing."
slaughter (v.)youdaoicibaDictYouDict
1530s, "butcher an animal for market," from slaughter (n.). Meaning "slay wantonly, ruthlessly, or in great numbers" is from 1580s. Related: Slaughtered; slaughtering.
slaughterhouse (n.)youdaoicibaDictYouDict
also slaughter-house, late 14c., "place where animals are butchered for market," from slaughter (n.) + house (n.). The Slaughter-house cases in U.S. history were 1873.
Slav (n.)youdaoicibaDictYouDict
late 14c., Sclave, from Medieval Latin Sclavus (c.800), from Byzantine Greek Sklabos (c.580), from Old Church Slavonic Sloveninu "a Slav," probably related to slovo "word, speech," which suggests the name originally identified a member of a speech community (compare Old Church Slavonic Nemici "Germans," related to nemu "dumb;" and Old English þeode, which meant both "race" and "language").

Identical with the -slav in personal names (such as Russian Miroslav, literally "peaceful fame;" Mstislav "vengeful fame;" Jaroslav "famed for fury;" Czech Bohuslav "God's glory;" and see Wenceslas). Spelled Slave c. 1788-1866, influenced by French and German Slave. As an adjective from 1876.
slave (n.)youdaoicibaDictYouDict
late 13c., "person who is the chattel or property of another," from Old French esclave (13c.), from Medieval Latin Sclavus "slave" (source also of Italian schiavo, French esclave, Spanish esclavo), originally "Slav" (see Slav); so used in this secondary sense because of the many Slavs sold into slavery by conquering peoples.
This sense development arose in the consequence of the wars waged by Otto the Great and his successors against the Slavs, a great number of whom they took captive and sold into slavery. [Klein]
Meaning "one who has lost the power of resistance to some habit or vice" is from 1550s. Applied to devices from 1904, especially those which are controlled by others (compare slave jib in sailing, similarly of locomotives, flash bulbs, amplifiers). Slave-driver is attested from 1807; extended sense of "cruel or exacting task-master" is by 1854. Slate state in U.S. history is from 1812. Slave-trade is attested from 1734.

Old English Wealh "Briton" also began to be used in the sense of "serf, slave" c.850; and Sanskrit dasa-, which can mean "slave," apparently is connected to dasyu- "pre-Aryan inhabitant of India." Grose's dictionary (1785) has under Negroe "A black-a-moor; figuratively used for a slave," without regard to race. More common Old English words for slave were þeow (related to þeowian "to serve") and þræl (see thrall). The Slavic words for "slave" (Russian rab, Serbo-Croatian rob, Old Church Slavonic rabu) are from Old Slavic *orbu, from the PIE root *orbh- (also source of orphan), the ground sense of which seems to be "thing that changes allegiance" (in the case of the slave, from himself to his master). The Slavic word is also the source of robot.

slave (v.)youdaoicibaDictYouDict
1550s, "to enslave," from slave (n.). The meaning "work like a slave" is first recorded 1719. Related: Slaved; slaving.
SlaveyoudaoicibaDictYouDict
Indian tribe of northwestern Canada, 1789, from slave (n.), translating Cree (Algonquian) awahkan "captive, slave."
slaver (v.)youdaoicibaDictYouDict
"dribble from the mouth," early 14c., from Old Norse slafra "to slaver," probably imitative (compare slobber (v.)). Related: Slavered; slavering. The noun is from early 14c.