gritstone grits • gritten · · · Info · Definitions · Synonyms · Characters · · gritstone · · Text Latin · · Script 9 · · Length Definitions · · · (noun) a hard coarse-grained siliceous sandstone. Synonyms: grit, gritrock. · · Noun Definition 1 Synonyms · · · grit · · Synonym 1 gritrock · · Synonym 2 Characters · · e latin small letter e U+0065 g latin small letter g U+0067 i latin small letter i U+0069 n latin small letter n U+006E o latin small letter o U+006F r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074