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

Example sentences from the Web for high sign

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]