a male officer who acts as an assistant to a member of a royal family 王室侍从官 Word Originearly 16th cent. (formerly also as esquiry): from Old French esquierie ‘company of squires, prince's stables’, from Old French esquier ‘esquire’, perhaps associated with Latin equus ‘horse’. The historical sense is apparently based on Old French esquier d'esquierie ‘squire of stables’.