Meaning of “head” - Learner’s Dictionary

head

noun [ C ] uk us /hed/
BODY

A1 the part of your body above your neck that contains your brain, eyes, ears, mouth, nose, etc and on which your hair grows:

He fell and hit his head on the table.
MIND

B1 your mind:

All these thoughts were going round in my head.
ORGANIZATION

B1 the person who is in charge of an organization:

Her father is the head of an oil company.
SCHOOL ( also head teacher) UK

A2 the person in charge of a school:

You'll have to ask the head if you can have a day off school.
FRONT/TOP

the front or top part of something:

Who is that at the head of the table?
£10/$6, etc a head

costing £10/$6, etc for each person:

The meal costs 20 euros a head.
heads

the side of a coin that has a picture of someone's head on it:

Heads or tails?
→ See also hit the nail on the head , a roof over your head , off the top of your head , be banging your head against a brick wall , come to a head , go over sb's head , go to your head , hang your head (in shame) , keep your head , lose your head , raise/rear its ugly head , laugh/shout/scream, etc your head off

(Definition of “head noun” from the Cambridge Learner’s Dictionary © Cambridge University Press)