caper
     n 1: any of numerous plants of the genus Capparis
     2: pickled flower buds used as a pungent relish in various
        dishes and sauces
     3: a crime (especially a robbery); "the gang pulled off a bank
        job in St. Louis" [syn: {job}]
     4: a ludicrous or grotesque act done for fun and amusement
        [syn: {antic}, {joke}, {prank}, {trick}, {put-on}]
     5: a playful leap or hop [syn: {capriole}]
     6: gay or light-hearted recreational activity for diversion or
        amusement; "it was all done in play"; "their frolic in the
        surf threatened to become ugly" [syn: {play}, {frolic}, {romp},
         {gambol}]
     v : jump about playfully
Source: WordNet® 2.0