Martinmas martinmas • Martinmas summer · · · Info · Definitions · Characters · · Martinmas · · Text Latin · · Script 9 · · Length 3 · · Syllables Definitions · · · (noun) the feast of Saint Martin; a quarter day in Scotland. Synonyms: St Martin's Day, 11 November. · · Noun Definition 1 Characters · · M latin capital letter m U+004D a latin small letter a U+0061 i latin small letter i U+0069 m latin small letter m U+006D n latin small letter n U+006E r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074