n., v., & adv.
--n. a block or wedge of wood to check motion, esp. of a cask or a wheel.
--v.tr.
1. fit or make fast with chocks.
2 (usu. foll. by up) Brit. cram full.
--adv. as closely or tightly as possible.
Etymology: prob. f. OF {ccedil}ouche, {ccedil}oche, of unkn. orig.