· any nonverbal action or gesture that encodes a message; "signals from the boat suddenly stopped"

Synonym(s): signaling, sign

Hypernym(s): communication

· any incitement to action; "he awaited the signal to start"; "the victory was a signal for wild celebration"

Hypernym(s): incitement, incitation, provocation

· an electric quantity (voltage or current or field strength) whose modulation represents coded information about the source from which it comes

Hypernym(s): electricity, electrical_energy, power

· communicate silently and non-verbally by signals or signs; "He signed his disapproval with a dismissive hand gesture"; "The diner signaled the waiters to bring the menu"

Synonym(s): sign, signalize, signalise

Hypernym(s): communicate, intercommunicate

· be a signal for or a symptom of; "These symptoms indicate a serious illness"; "Her behavior points to a severe neurosis"; "The economic indicators signal that the euro is undervalued"

Synonym(s): bespeak, betoken, indicate, point

Hypernym(s): tell

· notably out of the ordinary; "the year saw one signal triumph for the Labour party"