noun
-
the head of a pin
-
something very small
-
informal a stupid or contemptible person
Etymology
Origin of pinhead
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
A magnet roughly the size of a pinhead can lift a paper clip against the gravitational pull of the entire Earth.
From Science Daily ● Sep. 20, 2026
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 ● Oct. 2, 2024
To investigate, researchers coated 14 species of coral—10 in the lab and four in the wild—with tiny fluorescent beads, which are each smaller than a pinhead and glow under light-emitting diode light.
From Science Magazine ● May 12, 2022
During the tours, experts try to count pinhead cherries in the branches to come up with more detailed projections.
From Reuters ● Dec. 13, 2021
The pill was the size of a pinhead, and it had a pale brownish color.
From "The Hot Zone" by Richard Preston
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
