Sabot

Webster's Condensed Dictionary- A Condensed Dictionary of the English Language · 1909 · p. 519

sa-bo', n. A kind of wooden shoe, worn by the lower cla es in some European countries. (Mil.) A circular wooden disk to which the cartridge bag and projectile are attached, in a stand of ammunition. [F.; Bisc. zapata, shoe, zapatu, to tread.] Sabre. See Saber.