atm

noun

1. 1

   a unit of pressure: the pressure that will support a column of mercury 760 mm high at sea level and 0 degrees centigrade

2. 2

   an unattended machine (outside some banks) that dispenses money when a personal coded card is used

3. 3

   a means of digital communications that is capable of very high speeds; suitable for transmission of images or voice or video as well as data

   ATM is used for both LAN and WAN