pinhead

noun

pin·​head ˈpin-ˌhed How to pronounce pinhead (audio)
1
: the head of a pin
2
: something very small or insignificant
3
: a very dull or stupid person : fool

Example Sentences

The insect is the size of a pinhead. Her boss is a real pinhead.
Recent Examples on the Web Heming confirmed the person to be the suspect’s brother. Ricin, found naturally in castor beans, can cause death within 36 to 72 hours from exposure to an amount as small as a pinhead. Reuters, NBC News, 8 Jan. 2023 Aphids, which are about the size of a pinhead, are invading trees, mostly pecan, but also oaks, crepe myrtles and others, Sperry said. Sarah Bahari, Dallas News, 12 Oct. 2022 The plant has small, hollow structures (the bladders) – no bigger than a pinhead – that live under water and have a flexible valve. Allison Futterman, Discover Magazine, 6 Dec. 2021 Detecting larva and nymphs that can be as small as a pinhead further compounds the difficulties of the prevention and care of tick bites and TBDs. Rebecca Kreston, Discover Magazine, 5 Apr. 2011 Indigo and onion progeny are tiny, about the size of a pinhead. Latria Graham, Smithsonian Magazine, 2 Dec. 2022 Fleas, the pinhead sized bane of pets and pet owners alike, begin spreading into households across Indiana from mid to late summer. Karl Schneider, The Indianapolis Star, 12 July 2022 Among their squashes: Grumpkin, who looks grumpy, and Drunkin, whose long pinhead looks tipsy. Christopher Borrelli, Chicago Tribune, 15 June 2022 Perfect punctuality is a pinhead, a notional point on the continuum, kind of a Zeno’s paradox. James Parker, The Atlantic, 11 Feb. 2022 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'pinhead.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Word History

First Known Use

1593, in the meaning defined at sense 1

Time Traveler
The first known use of pinhead was in 1593

Dictionary Entries Near pinhead

Cite this Entry

“Pinhead.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/pinhead. Accessed 28 Jan. 2023.

Kids Definition

pinhead

noun
pin·​head ˈpin-ˌhed How to pronounce pinhead (audio)
1
: the head of a pin
2
: a very dull or stupid person : fool
Last Updated: - Updated example sentences
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