Butt

1. To thrust the head forward; to strike by thrusting the head forward, as an ox or a ram. [See Butt, n.]
2. A large cask or vessel for wine or beer. It contains two hogsheads.
3. To strike by thrusting the head against; to strike with the head.
4. To join at the butt, end, or outward extremity; to terminate; to be bounded; to abut.
5. The common English flounder.