语出南朝·宋·刘义庆《世说新语·容止》——魏王雅望非常,然床头捉刀人,此乃英雄也.
本意指坐榻边上执刀者（曹操）；引申为执笔近侍（御笔）
英文?
1.The one holding a broadsword beside the couch (indicating Prime Minister Cao Cao in an ancient acient)
2.senior entourage/entourage/attendant(任选) and writer (especially a royal writer)