The name of a room in the palace of the Byzantine Emperors, perhaps a purple one associated with imperial births.
Mid 19th century; earliest use found in Henry Milman (1791–1868), historian and dean of St Paul's.
英汉双解词典包含464360条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。