A foghorn or fog signal is a device that uses sound to warn vehicles of navigational hazards such as rocky coastlines, or boats of the presence of other vessels, in foggy conditions.

A foghorn or fog signal is a device that uses sound to warn vehicles of navigational hazards like rocky coastlines, or boats of the presence of other vessels, in foggy conditions.

The meaning of FOGHORN is a horn (as on a ship) sounded in a fog to give warning.

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FOGHORN meaning: 1. a horn that makes a very loud sound to warn ships that they are close to land or other ships…. Learn more.

Definition of foghorn noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

A foghorn is an acoustic signaling device designed to emit loud, distinctive sounds to warn ships of hazards during periods of reduced visibility, such as fog, mist, or heavy rain.

FOGHORN meaning: a horn on a boat, ship, etc., that makes a loud, deep sound and is used in foggy weather to warn nearby ships often used figuratively to describe someone with a very …

Nov 1, 2025 · foghorn (plural foghorns) A very loud low - pitched horn, used especially in lighthouses and on large boats. A strong gossiper.