sabot

noun

• 1a kind of simple shoe, shaped and hollowed out from a single block of wood, traditionally worn by French and Breton peasants.

• 2a device which ensures the correct positioning of a bullet or shell in the barrel of a gun, attached either to the projectile or inside the barrel and falling away as it leaves the muzzle.

• 3a box from which cards are dealt at casinos in gambling games such as baccarat and chemin de fer. Also called shoe.