fog signal fogsignal • fog up · · · Info · Definitions · Synonyms · Characters · · fog signal · · Text Common · · Latin · · Scripts 10 · · Length 3 · · Syllables Definitions · · · (noun) a loud low warning signal that can be heard by fogbound ships. Synonyms: foghorn, fogsignal. · · Noun Definition 1 Synonyms · · · foghorn · · Synonym 1 fogsignal · · Synonym 2 Characters · · space U+0020 a latin small letter a U+0061 f latin small letter f U+0066 g latin small letter g U+0067 i latin small letter i U+0069 l latin small letter l U+006C n latin small letter n U+006E o latin small letter o U+006F s latin small letter s U+0073