noun

• (colloquial) One who grooves, or enjoys rhythmic music.
• (colloquial) A groovy piece of music.
• (UK, dialect, Derbyshire, archaic) A miner.
• A device that makes grooves in surfaces.
• (US, slang) A small portable toilet often used on multiday river trips in protected wilderness areas, so named because the original versions were metal boxes whose rims left a groove in the skin of the user.
• A surname.