an extraordinary or unusual thing, person, or event; an exceptional example or instance.
a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.
a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes.
O.E. unefen "unequal," from un- (1) "not" + even. Cf. O.Fris. oniovn, M.Du. oneven, O.H.G. uneban, Ger. uneben, O.N. ujafn. Meaning "irregular, broken, rugged" (in ref. to terrain, etc.) is recorded from c.1275.