teller (n.)youdaoicibaDictYouDict[teller 词源字典]
"bank clerk who pays or receives money," late 15c., "person who keeps accounts," agent noun from tell (v.) in its secondary sense of "count, enumerate," which is the primary sense of cognate words in many Germanic languages. Earlier "person who announces or narrates" (c. 1300).[teller etymology, teller origin, 英语词源]