frolic

frolic (http://definr.com/frolic)

     n : 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, romp,
          gambol, caper]
     v : play boisterously; "The children frolicked in the garden";
         "the gamboling lambs in the meadows"; "The toddlers
         romped in the palyroom" [syn: lark, rollick, skylark,
          disport, sport, cavort, gambol, frisk, romp,
          run around, lark about]