high sign
noun
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
Words nearby high sign
high roller,
high school,
high sea,
high seas,
high season,
high sign,
high society,
high spirits,
high spot,
high steppage gait,
high stick
Example sentences 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 |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]