英语词源字典 - 在线词源网站

camper (n.)[camper 词源字典]: 1630s, "soldier," agent noun from camp (v.). Meaning "attendee at a camp meeting" is from 1806; meaning "one who sleeps in temporary quarters outdoors" is from 1856; that of "motor vehicle with sleeping quarters" is from 1960. Extended use of happy camper is from c. 1987.[camper etymology, camper origin, 英语词源]
dormant (adj.): late 14c., "fixed in place," from Old French dormant (12c.), present participle of dormir "to sleep," from Latin dormire "to sleep," from PIE root *drem- "to sleep" (cognates: Old Church Slavonic dremati "to sleep, doze," Greek edrathon "I slept," Sanskrit drati "sleeps"). Meaning "in a resting situation" (in heraldry) is from c. 1500. Meaning "sleeping' is from 1620s.
Exocet (n.): 1970, proprietary name of a rocket-propelled short-range guided missile, trademarked 1970 by Société Nationale Industrielle Aerospatiale, from French exocet "flying fish" (16c.), from Latin exocoetus, from Greek exokoitos "sleeping fish, fish that sleeps upon the beach," from exo "outside" (see exo-) + koitos "bed."
palliard (n.): late 15c., "vagabond or beggar" (who sleeps on straw in barns), from Middle French paillard, from Old French paillart "tramp, beggar, vagabond" (13c.), from paille "straw" (see pallet (n.1); also see -ard).
sleeper (n.): Old English slæpere "one who sleeps, one who is inclined to sleep much," agent noun from sleep (v.). Meaning "strong horizontal beam" is from c. 1600. Meaning "dormant or inoperative thing" is from 1620s. Meaning "railroad sleeping car" is from 1875. Sense of "something whose importance proves to be greater than expected" first attested 1892, originally in American English sports jargon, probably from earlier (1856) gambling slang sense of "unexpected winning card." Meaning "spy, enemy agent, terrorist etc. who remains undercover for a long time before attempting his purpose" first attested 1955, originally in reference to communist agents in the West.