Synonyms:
signal, signaling, sign
Meaning: any nonverbal action or gesture that encodes a message; "signals from the boat suddenly stopped"
Usage examples
And the signaling apparatus was here!
Gurgurk then announced that so enormous a crime against the friends of His Sublime etcetera had not been allowed to go unpunished, signaling behind him with one of his lower hands for the box to be brought forward.