n. One who idles; one who spends his time in inaction, or without occupation or employment; a lounging or lazy person; a sluggard.n. Nautical, a member of a ship's crew who is not required to keep night-watch.n. On board a whaler, one who is not required to assist in the capture of whales.n. In machinery, an idle-wheel.n. In railroading, an empty car; an empty.