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1. The head of a pin.
2. Something very small or insignificant.
3. Slang A stupid person; a dunce.

pin′head′ed adj.
pin′head′ed·ness n.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


1. the head of a pin
2. something very small
3. informal a stupid or contemptible person
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014



1. the head of a pin.
2. a stupid person; nitwit.
3. something very small or insignificant.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.pinhead - an ignorant or foolish personpinhead - an ignorant or foolish person  
simpleton, simple - a person lacking intelligence or common 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"
pin - a small slender (often pointed) piece of wood or metal used to support or fasten or attach things
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.


[ˈpɪnhed] N
1. (lit) → cabeza f de alfiler
2. (= idiot) → mentecato m, cabeza f de chorlito
Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005


[ˈpɪnhɛd] n
(= top of a pin) → tête f d'épingle
andouille f
Collins English/French Electronic Resource. © HarperCollins Publishers 2005
References in classic literature ?
Z., because the other initials were P-I-N-H-E-A-D; and that spelled 'pinhead,' which was a reflection on my intelligence."
In fact, in his boyhood, before he had been named Beauty by his fellows, he had been called "Pinhead."
It was coarse gold, running from pinheads to a twelve-dollar nugget, and it had come from off bed-rock.
They are the size of a pinhead and suck the energy from leaves.
Kendal, Eric Norman as Carr Gomm, Benjamin Rodrigues as Ross, Sean Sullivan as Conductor, Logan Van Lerberghe as Bishop Walsham How, Isaac Delgado as Snork, Joshua Baker as Porter, Maddy Velazquez as Duchess, Precious Scott as Countess, Ashley Przybylski as Princess Alexandra, Christopher Glade as Lord John, Isabella Nicholson as Miss Sandwich, Haley Battle as Pinhead 1, Sofia Castro-Przybyla as Pinhead 2, Clare Curran as Pinhead 3, Sarah Loster as Pinhead 4, Dylan Pyskaty as Pinhead 5, Hentic Welchko as Belgian Policeman 1, Domingo Montanez as Belgian Policeman 2, Wilson King as London Policeman, Max Bartkowiak as Man in Brussels, and David Stanfield as the Voice in the Lecture Hall.
The attacking particle was just an estimated 0.8 mm across (no bigger than a pinhead) and 1/1000 of a gram, but it was moving very fast--perhaps 7 km/s (16,000 mph).
Chop the sage and mix with the pinhead oats through a food processor until coarse.
A SECURITY expert used pinhead spy cameras to film two women in the shower.
The new winner is a mere pinhead of a gastropod named Acmella nana (shown in false color above, with snails lying on top of the journal article that describes them).
The spots can range from the size of a pinhead to about 2.5cm (1in) in diameter.
"You take a pinhead sample--and that's all it needs is a pinhead--and we can test that in a lab and it will tell us 100 percent who this belongs to."
Indeed, Tyrur Isabel was a granddaughter of Pinhead, and recently the track performances of her April 13 litter by Makeshift have really underlined the loss the Fahy camp now feels.