lark
US /lɑːrk/
UK /lɑːrk/
1.
a small ground-dwelling songbird, typically with a brown streaky plumage, a crest, and a melodious song, found chiefly in open country.
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The sweet song of the lark filled the morning air.
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We watched a lark ascend high into the sky.
1.
to enjoy oneself by behaving in a playful and mischievous way
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The children were larking about in the park.
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They spent the afternoon larking around by the river.