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fog signal

any of various types of signal used as a warning by vessels navigating in fog or mist.
Origin of fog signal
First recorded in 1750-60 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for fog signal
Historical Examples
  • Between roars of the fog signal, six bells vibrated on the air.

    Alias The Lone Wolf Louis Joseph Vance
  • Fog often obscures the rays of the most powerful light, and it is then that the fog signal and the whistling buoy come into play.

    The Sea Rovers Rufus Rockwell Wilson
  • The site of the camp is about a mile north of the Montara fog signal.

    The March of Portol Zoeth S. Eldredge and E. J. Molera
  • You know we're on government waters here and the pilot rules require us to keep a fog signal sounding once every minute.

    Boy Scouts in Southern Waters G. Harvey Ralphson
  • Timed by pulsebeats, it struck once every fifteen seconds or thereabouts: undoubtedly the fog signal of some minor light-house.

    Alias The Lone Wolf Louis Joseph Vance
  • There was a rush from below to the boat deck, but as there was a thick haze we decided it was only a fog signal.

British Dictionary definitions for fog signal

fog signal

a signal used to warn railway engine drivers in fog, consisting of a detonator placed on the line
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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