Larker

[lahrk] /lɑrk/

noun
1.
a merry, carefree adventure; frolic; escapade.
2.
innocent or good-natured mischief; a prank.
3.
something extremely easy to accomplish, succeed in, or to obtain:
That exam was a lark.
verb (used without object)
4.
to have fun; frolic; romp.
5.
to behave mischievously; play pranks.
6.
Fox Hunting. (of a rider) to take jumps unnecessarily:
He tired his horse by larking on the way home.
/lɑːk/
noun
1.
any brown songbird of the predominantly Old World family Alaudidae, esp the skylark: noted for their singing
2.
short for titlark, meadowlark
3.
(often capital) any of various slender but powerful fancy pigeons, such as the Coburg Lark
4.
up with the lark, up early in the morning
/lɑːk/
noun
1.
a carefree adventure or frolic
2.
a harmless piece of mischief
3.
what a lark!, how amusing!
verb (intransitive)
4.
(often foll by about) to have a good time by frolicking
5.
to play a prank
n.

“songbird,” early 14c., earlier lauerche (c.1200), from Old English lawerce (late Old English laferce), from Proto-Germanic *laiw(a)rikon (cf. Old Saxon lewerka, Frisian liurk, Old Norse lævirik, Dutch leeuwerik, German Lerche), of unknown origin. Some Old English and Old Norse forms suggest a compound meaning “treason-worker,” but there is no folk tale to explain or support this.

“spree, frolic,” 1811, possibly shortening of skylark (1809), sailors’ slang “play rough in the rigging of a ship” (larks were proverbial for high-flying), or from English dialectal lake/laik “to play” (c.1300, from Old Norse leika “to play,” from PIE *leig- “to leap”) with intrusive -r- common in southern British dialect. The verb lake, considered characteristic of Northern English vocabulary, is the opposite of work but lacks the other meanings of play. As a verb, from 1813. Related: Larked; larking.

noun

A merry time •Chiefly British (1811+)

verb

: This is no time to go larking (1813+)

[origin uncertain; perhaps fr an allusion to the bird, since skylark in the same sense is found somewhat earlier]
In addition to the idiom beginning with lark