Definition of Lark

Noun: lark laa(r)k

North American songbirds having a yellow breast
- meadowlark
A songbird that lives mainly on the ground in open country; has streaky brown plumage
- pipit, titlark
Any of numerous predominantly Old World birds noted for their singing
Any carefree episode
- escapade

Verb: lark laa(r)k

Play boisterously
"The children larked in the garden";
- frolic, rollick, skylark, disport, sport, cavort, gambol, frisk, romp, run around, lark about