caper
1. ca.per \'ka--p*r\ n [back-formation fr. earlier capers (taken as a plural), fr. ME caperis], fr. L capparis, fr. Gk kapparis 1: any of a genus (Capparis of the family Capparidaceae, the caper fa mily) of low prickly shrubs of the Mediterranean region; esp : one (C. spinosa) cultivated for its buds 2: one of the greenish flower buds or young berries of the caper picked for use as a relish 2. caper \-p(*-)rin\ vi or ca.per.ing [prob. by shortening & alter. fr. capriole] : to leap about in a gay frolicsome way : PRANCE 3. caper n 1: a gay bounding leap 2: a capricious escapade
Webster's English Dictionary