knap 1
/nap/ , n. Brit. Dial.
a crest or summit of a small hill.
[ bef. 1000; ME; OE cnaepp top, summit; c. ON knappr knob ]
knap 2
— knapper , n.
/nap/ , v.i., v.t., knapped, knapping . Chiefly Brit. Dial.
1. to strike smartly; rap.
2. to break off abruptly.
3. to chip or become chipped, as a flint or stone.
4. to bite suddenly or quickly.
[ 1425-75; late ME; c. D knap (n.), knappen (v.) crack; orig. imit. ]