Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun pinhead

2 senses of pinhead

Sense 1
dumbbell, dummy, dope, boob, booby, pinhead -- (an ignorant or foolish person)
       => simpleton, simple -- (a person lacking intelligence or common sense)

Sense 2
pinhead -- (the head of a pin)
       => head -- (a projection out from one end; "the head of the nail", "a pinhead is the head of a pin")