CHOCK is a playable word

chock Scrabble® Dictionary

verb
chocked, chocking, chocks
to secure with a wedge of wood or metal
8 Playable Words can be made from "CHOCK"
   2-Letter Words (3 found)
   3-Letter Words (1 found)
   4-Letter Words (3 found)
   5-Letter Words (1 found)