'Skylark' definitions:

Definition of 'skylark'

noun

Brown-speckled European lark noted for singing while hovering at a great height [syn: skylark, Alauda arvensis]

verb

Play boisterously; "The children frolicked in the garden"; "the gamboling lambs in the meadows"; "The toddlers romped in the playroom" [syn: frolic, lark, rollick, skylark, disport, sport, cavort, gambol, frisk, romp, run around, lark about]

From: GCIDE

Skylark \Sky"lark`\, n. (Zool.) A lark that mounts and sings as it files, especially the common species (Alauda arvensis) found in Europe and in some parts of Asia, and celebrated for its melodious song; -- called also sky laverock. See under Lark. [1913 Webster]
Note: The Australian skylark (Cincloramphus cantillans) is a pipit which has the habit of ascending perpendicularly like a skylark, but it lacks the song of a true lark. The Missouri skylark is a pipit (Anthus Spraguei) of the Western United States, resembling the skylark in habit and song. [1913 Webster]