interface

Concise Oxford English Dictionary © 2008 Oxford University Press:
interface/ˈɪntəfeɪs/

▶noun

• 1 a point where two things meet and interact.

  ■ chiefly Physics a surface forming a boundary between two portions of matter or space.

• 2 Computing a device or program enabling a user to communicate with a computer, or for connecting two items of hardware or software.

▶verb (interface with)

• 1 interact with.

• 2 Computing connect with (something) by an interface.