arc-boutant arcature • arccos · · · Info · Definitions · Synonyms · Characters · · arc-boutant · · Text Common · · Latin · · Scripts 11 · · Length 3 · · Syllables Definitions · · · (noun) a buttress that stands apart from the main structure and connected to it by an arch. Synonyms: flying buttress. · · Noun Definition 1 Synonyms · · · flying buttress · · Synonym 1 Characters · · - hyphen-minus U+002D a latin small letter a U+0061 b latin small letter b U+0062 c latin small letter c U+0063 n latin small letter n U+006E o latin small letter o U+006F r latin small letter r U+0072 t latin small letter t U+0074 u latin small letter u U+0075