farmer (n.)youdaoicibaDictYouDict[farmer 词源字典]
late 14c., "one who collects taxes, etc.," from Anglo-French fermer, Old French fermier "lease-holder," from Medieval Latin firmarius, from firma "fixed payment" (see farm (n.)). In the agricultural sense, 1590s, replacing native churl and husbandman.[farmer etymology, farmer origin, 英语词源]