Mid 19th century. From Rory O'More, the name of a legendary Irish rebel (the eponymous hero of a popular ballad and novel by S. Lover, Irish writer), used as rhyming slang for floor and door.
英语词典包含243303条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。