noun
plural larks
[count] :any one of several birds that usually have pleasant songs - see also meadowlark, skylark - compare 2lark
noun
plural larks
informal
[count] :something done for enjoyment or adventure
[noncount] Brit :activity of a specified kind :business
verb
larks; larked; larking
lark about
or lark around
[phrasal verb] Brit informal :to behave in a silly and enjoyable way