purser (n.)youdaoicibaDictYouDict[purser 词源字典]
mid-15c., "treasurer," especially "caretaker of accounts and provisions on a ship," originally also "maker of purses" (late 15c.), agent noun from Middle English purse (see purse (n.)). From late 13c. as a surname.[purser etymology, purser origin, 英语词源]