From WordNet (r) 3.0 (2006):
wit
n 1: a message whose ingenuity or verbal skill or incongruity
has the power to evoke laughter [syn: wit, humor,
humour, witticism, wittiness]
2: mental ability; "he's got plenty of brains but no common
sense" [syn: brain, brainpower, learning ability,
mental capacity, mentality, wit]
3: a witty amusing person who makes jokes [syn: wag, wit,
card]