Main Entry: eight Pronunciation: \ˈāt\ Function: noun Etymology: Middle English eighte, from eighte, adjective, from Old English eahta; akin to Old High German ahto eight, Latin octo, Greek oktō Date: before 12th century 1— see number table 2: the eighth in a set or series <the eight of spades> 3: something having eight units or members: as a: an 8-oared racing boat or its crew b: an 8-cylinder engine or automobile — eight adjective — eight pronoun, plural in construction