A protuberance; a swelling; a knob.
A small hill
A sharp blow or slap.
The crest of a hill
To rap or strike sharply.
To shape a brittle material having conchoidal fracture, usually a mineral (flint, obsidian, chert etc.), by breaking away flakes, often forming a sharp edge or point.
To make a sound of snapping.
An abnormal convex curvature of the spine in the cervical or lumbar regions of the spine.
The normal convex curvature of the spine in the thoracic and sacral regions.