From WordNet (r) 2.0 [wn]:
interface n 1: (chemistry) a surface forming a common boundary between two things (two objects or liquids or chemical phases) 2: (computer science) a program that controls a display for the user (usually on a computer monitor) and that allows the user to interact with the system [syn: {user interface}] 3: the overlap where two theories or phenomena affect each other or have links with each other; "the interface between chemistry and biology" 4: (computer science) computer circuit consisting of the hardware and associated circuitry that links one device with another (especially a computer and a hard disk drive or other peripherals) [syn: {port}
From The Free On-line Dictionary of Computing (27 SEP 03) [foldoc]:
interface <jargon> A boundary across which two systems communicate. An interface might be a hardware connector used to link to other devices, or it might be a convention used to allow communication between two software systems. Often there is some intermediate component between the two systems which connects their interfaces together. For example, two {EIA-232} interfaces connected via a serial cable.
InterFace PirateRadio
http://interface.pirate-radio.org/thesite/index.html
http://interface.pirate-radio.org/thesite/images/new-mainlogo.jpg --> InterFACE . DrOwl