what is origin of the word teller?

Answer 1

Teller is a derivative of the verb tell. While tell has its source in Old English, teller came about in the late 15th century. Tell's original sense was 'to mention in order,' and the 'order' sense of the original meaning stuck with teller.

Answer 2

The noun teller has 3 meanings:

Meaning #1: an official appointed to count the votes (especially in legislative assembly)
Synonym: vote counter


Meaning #2: an employee of a bank who receives and pays out money
Synonyms: cashier, bank clerk


Meaning #3: someone who tells a story
Synonyms: narrator, storyteller

"bank clerk who pays or receives money," 1475, "person who keeps accounts," from tell in its secondary sense of "count, enumerate," which is the primary sense of cognate words in many Germatic languages.

Answer 3

You could look it up. A "teller" is one who "tells." "Tell" is an old word for count, so a teller is one who counts (in most cases, at a bank window).