plural of group box

(bridge) A box holding cards with calls printed on them, allowing a player to bid without speaking.

A box containing items that serve as reminders.

(idiomatic) Restricted by convention

plural of karaoke box

(chiefly Asia) A small room containing karaoke equipment that can be rented for a period of time.

(historical) A small box, usually jewelled or of precious metal and worn on a chain, containing a mirror, powder puff, and other small toilet articles for a woman.

plural of vanity box

(electrical engineering) A box through which the main conductors of a system of electric distribution pass, and where connection is made with branch circuits or to extend circuits.

Alternative form of boxcar