late 14c., "to show signs of madness or delirium," from O.Fr. raver, variant of resver "to dream, wander, rave," of unknown origin (see reverie). The identical (in form) verb meaning "to wander, stray, rove" first appeared c.1300 in Scottish and northern dialect, and is
probably from an unrelated Scand. word (cf. Icelandic rafa). Sense of "talk enthusiastically about" first recorded 1704. Noun meaning "rowdy party" is from 1960, though rave-up was British slang for "wild party" from 1940; specific modern sense of "mass party with loud, fast electronic music and often psychedelic drugs" is from 1989. Raver, from this sense, is first recorded 1991.
raving
late 15c.; see rave; sense of "remarkable" is from 1841.
n. a party; a wild celebration. : Let's have a little rave next Friday.
Dictionary of American Slang and Colloquial Expressions by Richard A. Spears.Fourth Edition. Copyright 2007. Published by McGraw Hill.
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