head

noun
The upper part of the human body, or the front or upper part of the body of an animal, typically separated from the rest of the body by a neck, and containing the brain, mouth, and sense organs.
A thing resembling a head either in form or in relation to a whole.
The front, forward, or upper part or end of something.
A person in charge of something; a director or leader. (the head of the Dutch Catholic Church)
A person considered as a numerical unit. (they paid fifty dollars a head)
A component in an audio, video, or information system by which information is transferred from an electrical signal to the recording medium, or vice versa.
A body of water kept at a particular height in order to provide a supply at sufficient pressure. (an 8 m head of water in the shafts)
A toilet or bathroom on a boat or ship.
The word that governs all the other words in a phrase in which it is used, having the same grammatical function as the whole phrase.
A superficial deposit of rock fragments, formed at the edge of an ice sheet by repeated freezing and thawing and then moved downhill.

verb
Be in the leading position on. (the Palm Sunday procession was headed by the crucifer)
Give a title or caption to. (an article headed “The Protection of Human Life.”)
Move in a specified direction. (he was heading for the exit)
Shoot or pass (the ball) with the head. (a corner kick that he headed into the net)
Lop off the upper part or branches of (a plant or tree).
(of a lettuce or cabbage) form a head.

adjective
Chief; principal. (the head waiter)