Definitions of signal:
  • noun:   any communication that encodes a message
    Example: "Signals from the boat suddenly stopped"
  • noun:   any incitement to action
    Example: "He awaited the signal to start"
  • noun:   an electric quantity (voltage or current or field strength) whose modulation represents coded information about the source from which it comes
  • verb:   communicate silently and non-verbally by signals or signs
    Example: "The diner signaled the waiters to bring the menu"
  • verb:   be a signal for or a symptom of
    Example: "The economic indicators signal that the euro is undervalued"
  • adjective:   notably out of the ordinary
    Example: "The year saw one signal triumph for the Labour party"

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