An expressive, meaningful bodily movement
Readily attracting notice
To communicate by means of such devices as lights or signs
To make bodily motions so as to convey an idea or complement speech
Place your thumb on the pad, and it'll signal me.
His thrashing was the signal he was in the throes of dream.
As soon as the signal to walk flashed, she put some distance between her and the crazy woman.
Her cell phone had no signal, her head throbbed, and the coffee pot was empty.
Not sure we can get a signal on the GPS tags Jessi put on her cousin.