eight (Adjective) — Being one more than seven.
eight (Noun) — The cardinal number that is the sum of seven and one.
eight (Noun) — One of four playing cards in a deck with eight pips on the face.
eight (Noun) — A light, narrow rowing boat, esp. one used in competitive rowing, for eight rowers and a cox.
eight (Noun) — A group of United States painters founded in 1907 and noted for their realistic depictions of sordid aspects of city life.