• any communication that encodes a message; "Signals from the boat suddenly stopped"
• any incitement to action; "he awaited the Signal to start"; "the victory was a Signal for wild celebration"
• an electric quantity (voltage or current or field strength) whose modulation represents coded information about the source from which it comes
• 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"
• 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"
• notably out of the ordinary; "the year saw one Signal triumph for the Labour party"

'Signal' in other languages