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Definition of "warning signal" [warning signal]

  • An automatic signal (usually a sound) warning of danger (noun)

WordNet. Princeton University. 2010.

Use "warning signal" in a sentence
  • "This I afterward discovered was one of the secret signs of the San Luang; and the warning signal was addressed to me, because they imagined that I also was a member of the Council."
  • "Suddenly he overturned the camp-bed, throwing Jojo on to the ground, for he thought that there might be an electric switch working a warning signal outside."
  • "Brad glanced uneasily at Percey as he changed the transponder setting — to the code that automatically sent a warning signal to all radar facilities in the area that Foxtrot Bravo was in trouble."