KNAP

I. noun Etymology: Middle English, from Old English cnæp; akin to Old English cnotta knot Date: before 12th century a crest of a hill ; summit , a small hill, II. transitive verb (~ped; ~ping) Etymology: Middle English ~pen, of imitative origin Date: 15th century rap II,1, to break with a quick blow, snap , crop , chatter , ~per noun