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Adjective signal has 1 sense
  1. signal - notably out of the ordinary; "the year saw one signal triumph for the Labour party"
    Antonym:     unimpressive (indirect, via impressive)
,Noun signal has 3 senses
  1. signal, signaling, sign - any communication that encodes a message; "signals from the boat suddenly stopped"
    --1 is a kind of communication
    --1 has particulars:
     recording; phone number, telephone number, number; starting signal, start; storm signal; radio beam, beam; ticktack; time signal; dog-ear; animal communication; alarm, alert, warning signal, alarum; distress signal, distress call; all clear; bugle call; curfew; retreat; drumbeat; telegraphic signal, radiotelegraphic signal; whistle, whistling; high sign; symbol; visual signal; indicator; electronic signal; radio beacon; input signal, input; output signal, output
    Derived forms: verb signal2, verb signal1, verb signalize1, verb signalize3, verb signalize2, verb signalize4
  2. signal - any incitement to action; "he awaited the signal to start"; "the victory was a signal for wild celebration"
    --2 is a kind of     incitement, incitation, provocation
  3. signal - an electric quantity (voltage or current or field strength) whose modulation represents coded information about the source from which it comes
    --3 is a kind of     electricity, electrical energy
,Verb signal has 2 senses
  1. sign, signal, signalize, signalise - 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"
    --1 is one way to communicate, intercommunicate
    Derived forms: noun signal1, noun signaller1, noun signaler1, noun signaling1
    Sample sentences:
    They signal them the information
    They signal the information to them
  2. bespeak, betoken, indicate, point, signal - 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"
    --2 is one way to tell
    Derived form: noun signal1
    Sample sentence:
    Something ----s something
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