verb chap, dunt, ding, ca(w); (sharply) knap, rap; (at a door) chap.
noun chap, dunt, ding, ca(w); (sharp) knap.
‣ knock off (work) lowse.
‣ knocking-off time lowsin time.
‣ knock-kneed in-kneed, sha(u)chlin.
‣ knock down ca(w) doon, whummle; (specifically a person) cowp.