quarter-hour quarter horse • quarter ill · · · Info · Definitions · Synonyms · Characters · · quarter-hour · · Text Common · · Latin · · Scripts 12 · · Length Definitions · · · (noun) a quarter of an hour. Synonyms: 15 minutes. · · Noun Definition 1 Synonyms · · · 15 minutes · · Synonym 1 Characters · · - hyphen-minus U+002D 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 t latin small letter t U+0074 u latin small letter u U+0075