"gambol" in the noun sense
1. play, frolic, romp, gambol, caper
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"
"gambol" in the verb sense
1. frolic, lark, rollick, skylark, disport, sport, cavort, gambol, frisk, romp, run around, lark about
"The children frolicked in the garden"
"the gamboling lambs in the meadows"
"The toddlers romped in the playroom"
Source: WordNet® (An amazing lexical database of English)
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