quarter horse quarter grain • quarter ill · · · Info · Definitions · Characters · · quarter horse · · Text Common · · Latin · · Scripts 13 · · Length 4 · · Syllables Definitions · · · (noun) a small powerful horse originally bred for sprinting in quarter-mile races in Virginia. Synonyms: quarter horse. · · Noun Definition 1 Characters · · space U+0020 a latin small letter a U+0061 e latin small letter e U+0065 h latin small letter h U+0068 o latin small letter o U+006F q latin small letter q U+0071 r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074 u latin small letter u U+0075