noun: A person who moonlights, or works a second job on the side.
noun: (US, regional) One who serenades by moonlight.
noun: A moonshiner, who makes illicit alcohol.
noun: (Ireland, historical) One of a gang who used violence, especially at night, to promote agrarianism in Ireland during the Land War of the late 19th century.
noun: (Australia) A southern Australian marine fish, Tilodon sexfasciatum.