pinhead

[ pin-hed ]

/ ˈpɪnˌhɛd /

the head of a pin.

something very small or insignificant.

Slang. a stupid person; nitwit.

Origin of pinhead

First recorded in 1655–65; pin + head

A marriage without "even a pinhead of bitterness" is a marriage without a pin-point of fault-finding, mental or oral.

Happiness and Marriage |Elizabeth (Jones) Towne
It may well be a word is engraved on the coin, in the same microscopic letters as these on the pinhead.

The Diamond Pin |Carolyn Wells
They project into the ventricles as masses, varying in size from a pinhead to a hen's egg.

Special Report on Diseases of Cattle |U.S. Department of Agriculture
The currents of the river and the ocean have made of it only a pinhead on modern maps.

Castles and Chateaux of Old Navarre and the Basque Provinces |Francis Miltoun

These were crushed into carefully sized small bits about the size of a pinhead and packed in layers in the canisters.

America's Munitions 1917-1918 |Benedict Crowell

pinhead

/ (ˈpɪnˌhɛd) /

the head of a pin

something very small

informal a stupid or contemptible person