n The point of interconnection or contact between entities.
n (chemistry, physics) A thin layer or boundary between different substances or two phases of a single substance.
n (computing) The point of interconnection between systems or subsystems.
n (computing) The connection between a user and a machine.
n (computing, object-oriented programming) The connection between parts of software; also the public or published sections of an object or module,
n (computing, object-oriented programming) In object-oriented programming, a piece of code defining a set of operations that other code must implement.
n (object-oriented programming) In some languages, a block of code declaring the interface (point of interconnection) between a class and code that interacts with it.
n (biochemistry) The internal surface of a coiled protein (compare exoface).
v (transitive) To construct an interface for.
v (transitive, intransitive) To connect through an interface.
v (intransitive) To serve as an interface.
v (business, intransitive) To meet for discussion.