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high sign
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noun
a gesture, glance, or facial expression used as a surreptitious signal to warn, admonish, or inform.
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Origin of high sign
First recorded in 1900–05
Words nearby high sign
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use high sign in a sentence
Other Idioms and Phrases with high sign
high sign
A secret signal intended to warn or inform, as in Dad gave us the high sign when it was time to leave. This expression presumably alludes to a gesture such as a hand wave. [c. 1900]
The American Heritage® Idioms Dictionary
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