pinhead

American  

[pin-hed] / ˈpɪnˌhɛd /

noun

1. the head heads of a pin.

2. something very small or insignificant.

3. Slang. a stupid person; nitwit.

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pinhead British  

/ ˈpɪnˌhɛd /

noun

1. the head of a pin

2. something very small

3. informal a stupid or contemptible person

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Etymology

Origin of pinhead

First recorded in 1655–65; pin + head

Example Sentences

They can walk, hover and the males can even sing love songs to woo mates - all this with a brain that's tinier than a pinhead.

From BBC

They can walk, hover and the males can even sing love songs to woo mates - all this with a brain that’s tinier than a pinhead.

From BBC

With a brain the size of a pinhead, insects perform fantastic navigational feats.

From Science Daily

“We have freedom, but it’s on a pinhead,” said Kent Lyons, who has lived on the territory since 1970.

From Washington Times

Every single day he looked like he had just walked out of Sunday school: Every thin yellow hair on his pinhead was perfectly cut and licked to a gloss.

From Literature