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 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for pinhead

Historical Examples of pinhead

  • If Piddie hadn't been a pinhead, he'd had his name on the board of directors years ago.


    Sewell Ford

  • They range in size from a pinhead to ten or twelve feet in diameter.

  • The egg is no bigger than a pinhead, yellow, or cream-coloured.

  • God, you're a pinhead—from the point of view of mere tactics.

    The Sturdy Oak

    Samuel Merwin, et al.

  • Behind the screen, one of the multiple rows of pinhead tapes shifted slightly as the index was flicked into reading position.


    James H. Schmitz

British Dictionary definitions for pinhead



the head of a pin
something very small
informal a stupid or contemptible person
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for pinhead

also pin-head, "head of a pin," 1660s, from pin (n.) + head (n.). Meaning "person of small intelligence" is from 1896.

Online Etymology Dictionary, © 2010 Douglas Harper