- a gesture, glance, or facial expression used as a surreptitious signal to warn, admonish, or inform.
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
I come to you and give you the high-sign—and you throw me down.The Million-Dollar Suitcase
Idioms and Phrases with 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 Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.