Microcephaly vs. Pinhead — What's the Difference?

Microcephaly (from New Latin microcephalia, from Ancient Greek μικρός mikrós "small" and κεφαλή kephalé "head") is a medical condition involving a shorter-than-normal head. Microcephaly may be present at birth or it may develop in the first few years of life.

The head of a pin.

Abnormal smallness of the head.

Something very small or insignificant.

A neurological disorder in which the person affected has an abnormally small head due to a failure of brain growth.

(Slang) A stupid person; a dunce.

An abnormally small head and underdeveloped brain

The head of a pin. Frequently used in size comparisons.

(slang) A foolish or stupid person.

(slang) 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".

A newborn cricket used as food for pets.

(mycoculture) The immature juvenile fruiting body of a mushroom prior to its gills opening.

An ignorant or foolish person

The head of a pin