Keystone state keystone state • keystone stater · · · Info · Definitions · Characters · · Keystone state · · Text Common · · Latin · · Scripts 14 · · Length 4 · · Syllables Definitions · · · (noun) a Mid-Atlantic state; one of the original 13 colonies. Synonyms: Pennsylvania, Keystone State, PA. · · Noun Definition 1 Characters · · space U+0020 K latin capital letter k U+004B a latin small letter a U+0061 e latin small letter e U+0065 n latin small letter n U+006E o latin small letter o U+006F s latin small letter s U+0073 t latin small letter t U+0074 y latin small letter y U+0079