pinhead
Pronunciation:
/ˈpɪn.hɛd/noun
Definitions
The head of a pin. (Frequently used in size comparisons.)
An ignorant, naive, foolish, or stupid person.
A telemark skier.
A human head that is unusually tapered or small, often due to microcephaly, or a person with that trait. Often promoted in freak shows as "human pinheads".