A joint, in flooring or panelling, made by fitting a ridge (tongue) along the edge of one board into a corresponding slot (groove) on another.

A store that sells food that has passed its coded sell-by date, has damaged packaging, or is otherwise unfit for the general retail market.

(idiomatic) To begin an activity immediately and with full commitment.

An attack to the groin area of the body.

The practice of having sex with multiple partners at the same time.

A fan, especially a young female fan of a male singer or rock group; a person who seeks intimacy (most often physical, sometimes emotional) with a celebrity, usually a rock 'n' roll artist or band member.

A group photo including the photographer; a group self-portrait.

(military, slang) A group captain.

A form of polygynous, polyandrous marriage in which more than one man and more than one woman form a family unit.

(idiomatic, figuratively) To create a foundation; to provide the basics or fundamentals.