0 a horn that makes a very loud sound to warn ships that they are close to land or other ships: --
He has a voice like a foghorn (= an unpleasantly loud voice).
1 a loud horn that a ship uses in a fog to warn other ships of its position --
Its foghorn sounds three blasts at one minute intervals.
All foghorns use a vibrating column of air to create an audible tone, but the method of setting up this vibration differs.
The foghorn sounds every 60 seconds as well.
At that time the keeper would steadily have to keep the fire burning in great pans and operate a bell and foghorn.
A "leghorn" is a breed of chicken, and "foghorn" describes the character's loud, overbearing voice.
He leans out of the window to warn the ships, but the foghorn stops and all he can do is quack.
Foghorn then closes the gate to the fence just in time for the dog to crash into it head first.
Now in areas of fog the lights are typically combined with a foghorn.
