- Automatic teller machine (ATM)
An automated teller machine or automatic teller machine (ATM) a cash machine, cashpoint, cashline,is a computerized telecommunications device that enables the clients of a financial institution to perform financial transactions without the need for a cashier, human clerk or bank teller.
http://en.wikipedia.org/wiki/Automated_teller_machine
teller [countable]
1 someone whose job is to receive and pay out money in a bank
2 someone who counts votes
http://www.ldoceonline.com/dictionary/teller