butt

ot noun

1. A push, thrust, or sudden blow, given by the head; a head butt. Be careful in the pen, that ram can knock you down with a butt.
2. The larger or thicker end of something; the blunt end, in distinction from the sharp or narrow end
3. The waste end of anything
4. (generally) An end of something, often distinguished in some way from the other end.

fe’l verb

1. To strike bluntly with the head. Rams butt at other males during mating season.
2. To join at the butt, end, or outward extremity; to terminate; to be bounded; to abut.
3. To strike bluntly, particularly with the head.