pin down
Britishverb
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to force (someone) to make a decision or carry out a promise
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to define clearly
he had a vague suspicion that he couldn't quite pin down
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to confine to a place
the fallen tree pinned him down
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Fix or establish clearly, as in The firefighters finally were able to pin down the source of the odor . [Mid-1900s]
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Force someone to give precise information or opinions, as in The reporter pinned down the governor on the issue of conservation measures . [c. 1700]
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.
"Theorists may come to further conclusions and identify measurements that could help pin down the real nature of these particular states."
From Science Daily ● Sep. 2, 2026
In the 1990s, Fabares fell ill, but doctors struggled to pin down what the problem was.
From Los Angeles Times ● Aug. 28, 2026
But Parton could be hard to pin down.
From Salon ● Aug. 27, 2026
Even Witkoff’s friends can’t pin down how the two became so close.
From Slate ● Jul. 22, 2026
Just like Jupe, she’s hard to pin down.
From "Odd One Out" by Nic Stone
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.
