lark
nounUK /lɑːk/
US /lɑːrk/
A lark is a small brown bird that sings as it flies high in the sky.
We heard a lark singing above the field.
OTHER MEANINGS
2. A fun adventure or a bit of mischief.
We went on a lark to the beach at midnight.
3. A harmless joke or prank.
He hid my shoes as a lark.
4. To play and have fun in a silly way.
The kids larked about in the garden all afternoon.