jig (Noun) — Music in three-four time for dancing a jig.
jig (Noun) — A fisherman's lure with one or more hooks that is jerked up and down in the water.
jig (Noun) — A device that holds a piece of machine work and guides the tools operating on it.
jig (Noun) — Any of various old rustic dances involving kicking and leaping.
jig (Verb) — Dance a quick dance with leaping and kicking motions.