lark lark /ˈlɑːrk/

noun

1. [Informal] Any carefree episode  ( escapade , lark [Informal] )
   any carefree episode
   
2. Any of numerous predominantly Old World birds noted for their singing  ( lark )
   any of numerous predominantly Old World birds noted for their singing
   
   
3. A songbird that lives mainly on the ground in open country; has streaky brown plumage  ( lark , pipit , titlark )
   a songbird that lives mainly on the ground in open country; has streaky brown plumage
   
   
4. North American songbirds having a yellow breast  ( lark , meadowlark )
   North American songbirds having a yellow breast
   
   

verb

1. [Informal] Play boisterously  ( disport , frisk , gambol , frolic , lark [Informal] , lark about [Informal] , rollick , skylark [Informal] , sport , cavort , romp , run around )
   play boisterously
    The children frolicked in the garden
   The children frolicked in the garden
    The gamboling lambs in the meadows
   the gamboling lambs in the meadows
    The toddlers romped in the playroom
   The toddlers romped in the playroom