Skylark :: Skylark (n.) 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..
Skylarking :: Skylarking (n.) The act of running about the rigging of a vessel in sport; hence, frolicking; scuffing; sporting; carousing..