KNAP

noun a sharp blow or slap.

2. knap ·vi to make a sound of snapping.

3. knap ·vt to bite; to bite off; to break short.

4. knap ·vt to strike smartly; to rap; to snap.

5. knap ·noun a protuberance; a swelling; a knob; a button; hence, rising ground; a summit. ·see knob, and knop.