Sabot

Definition:

(n.) A kind of wooden shoe worn by the peasantry in France, Belgium, Sweden, and some other European countries.
(n.) A thick, circular disk of wood, to which the cartridge bag and projectile are attached, in fixed ammunition for cannon; also, a piece of soft metal attached to a projectile to take the groove of the rifling.

Compare sabot with other words:

jabot vs. sabot