lark Definition

lark¹
noun

1. Any of various different kinds of bird, but especially the skylark, that are usually gregarious, brownish in colour, ground-nesting and characterized by their tuneful song which they often deliver while in flight.

Idiom: as happy as a lark

Extremely carefree.

Idiom: get up with the lark (be up with the lark)

To be up and about very early in the morning.

Etymology: Anglo-Saxon lawerce.

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lark²
noun

colloq:
1. A joke or piece of fun.

Thesaurus: escapade, spree, caper, antic, fling, mischief, prank, revel, romp.
(Brit)
2. colloq
A job or activity.
Example: the navy lark

verb

intr
larked, larking
1. colloq
To play or fool about frivolously.
Form: lark about (usually)
Form: lark around

Etymology: 19c.