"larks" in the noun sense
1. meadowlark, lark
North American songbirds having a yellow breast
2. pipit, titlark, lark
a songbird that lives mainly on the ground in open country has streaky brown plumage
any of numerous predominantly Old World birds noted for their singing
4. escapade, lark
any carefree episode
"larks" 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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