archivolt
/ˈɑːkɪvəʊlt/noun
1- a band of mouldings round the lower curve of an arch拱门缘饰。
1.1
- the lower curve itself from impost to impost of the columns拱墩缘饰。
词源
mid 17th cent.: from French archivolte or Italian archivolto, based on Latin arcus 'bow， arch' + volvere 'to roll'.