Crossword Genius

He counts as a bank employee (6)

Ross

I believe the answer is:

teller

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'bank employee' is the definition.
(I've seen this before)

I can't explain the rest of the clue.

Can you help me to learn more?

(Other definitions for teller that I've seen before include "Bank official or reporter" , "who worked on the hydrogen bomb" , "Bank official or narrator" , "Cashier - vote counter - narrator" , "Election official" .)

I've seen this clue in The Telegraph.
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