Definition of head:

part of speech: verb

To act as a leader to; to fit or furnish with a head; to top off; to form a head; to go in front of; to oppose; to restrain.

part of speech: noun

The uppermost part of the body containing the face, & c.; a chief person; the chief or principal part of anything; a leader; understanding or mind; a title or heading; source of a stream; the top part; the forepart, as of a ship; chief place, as head of affairs; division of a discourse; crisis or height, as to bring or come to a head.

part of speech: adjective

Chief; principal.