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high sign

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noun
  1. 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
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for high sign

Historical Examples

  • I come to you and give you the high-sign—and you throw me down.

    The Million-Dollar Suitcase

    Alice MacGowan


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]

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The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.