Knap
From BiblePortal Wikipedia
Knap [1]
(1): ( n.) A protuberance; a swelling; a knob; a button; hence, rising ground; a summit. See Knob, and Knop.
(2): ( v. t.) To strike smartly; to rap; to snap.
(3): ( n.) A sharp blow or slap.
(4): ( v. t.) To bite; to bite off; to break short.
(5): ( v. i.) To make a sound of snapping.