An ATM is a machine built into the wall of a bank or other building, which allows people to take out money from their bank account by using a special card. ATM is an abbreviation for 'automated teller machine'.
[mainly US]regional note: in BRIT, use cash dispenser
ATM in British English
abbreviation for
1.
automated teller machine
2.
asynchronous transfer mode: used in digital communications, etc
3. messaging & social media
at the moment
atm. in British English
abbreviation for
atmosphere (unit of pressure)
Also: at.
ATM in American English1
(ˈeɪtiˈɛm)
noun
a computer terminal that allows a bank customer to deposit, withdraw, or transfer funds automatically