sour grass sour grapes • sour gum · · · Info · Definitions · Synonyms · Characters · · sour grass · · Text Common · · Latin · · Scripts 10 · · Length 2 · · Syllables Definitions · · · (noun) any of certain coarse weedy plants with long taproots, sometimes used as table greens or in folk medicine. Synonyms: dock, sorrel, sour grass. · · Noun Definition 1 Synonyms · · · dock · · Synonym 1 sorrel · · Synonym 2 Characters · · space U+0020 a latin small letter a U+0061 g latin small letter g U+0067 o latin small letter o U+006F r latin small letter r U+0072 s latin small letter s U+0073 u latin small letter u U+0075