signal light signal level • signal mast · · · Info · Definitions · Synonyms · Characters · · signal light · · Text Common · · Latin · · Scripts 12 · · Length 3 · · Syllables Definitions · · · (noun) a fire set as a signal. Synonyms: signal fire, signal light. · · Noun Definition 1 Synonyms · · · signal fire · · Synonym 1 Characters · · space U+0020 a latin small letter a U+0061 g latin small letter g U+0067 h latin small letter h U+0068 i latin small letter i U+0069 l latin small letter l U+006C n latin small letter n U+006E s latin small letter s U+0073 t latin small letter t U+0074