late 14c., from fifteen + -th (1). By 15c. displacing forms derived from Old English fifteoða. Compare Old Frisian fiftuda, Dutch vijftiende, German fünfzehnte, Old Norse fimmtandi, Gothic fimftataihunda, with ordinal -d where English has -th. As a noun by late 14c.
双语例句
1. The local church has traces of fifteenth-century frescoes.
当地教堂仍留有15世纪壁画的遗迹。
来自柯林斯例句
2. He will have left by January the fifteenth.
到1月15日他肯定已经离开了。
来自柯林斯例句
3. The castle was enlarged considerably in the fifteenth century.
