intransitive. To butt with the head; to push.

transitive. Esp. of an animal: to thrust, push, or strike (a person or thing) with the head, horns, or other body part; (with adverb or…

transitive. To strike or drive at (something) with the head; to headbutt. Obsolete.

humorously. To beat with the brow.

transitive. To hit or strike; to butt; to box.

transitive. To attack or strike (a person) with a headbutt. Also (and in earliest use) intransitive.

transitive. British slang. To butt with the head. Also: to strike on the head.

transitive. To bang one's head against (something).