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

Examples of pinhead in a Sentence

The insect is the size of a pinhead. Her boss is a real pinhead.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Regarding the expressionless eyes, 500 black pins were sourced to find a pinhead the right size, with the team carefully measuring each one. Alex Ritman, Variety, 9 Jan. 2025 Joining preservationists at Williamsburg, chemists at the paint company performed microscopic analysis on pinhead-sized samples to determine how various colors evolved over time, ultimately identifying 144 separate hues, all original to Colonial Williamsburg. Cornelia Powers, Vogue, 16 Dec. 2024 Exposure to as much as a pinhead of the substance will lead to death in 36 to 72 hours. Michael Loria, USA TODAY, 8 Mar. 2025 Regarding the expressionless eyes, 500 black pins were sourced to find a pinhead the right size, with the team carefully measuring each one. Alex Ritman, Variety, 9 Jan. 2025 See All Example Sentences for pinhead

Word History

First Known Use

1593, in the meaning defined at sense 1

Time Traveler
The first known use of pinhead was in 1593

Browse Nearby Words

Cite this Entry

“Pinhead.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/pinhead. Accessed 22 Apr. 2025.

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
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!