interface

• POS: Noun
• HYPHEN: in=ter=face

CIDE DICTIONARY

interface, n. 

•  a surface forming a common boundary between two things, especially between two fluids.  [WordNet 1.5]
•  hardware that links one device with another (especially a computer).  [WordNet 1.5]
•  That part of a computer program which controls the way a program interacts with a user; the manner of inputting and outputting of data, and the way information is presented on a computer monitor; also called user interface; as, a graphical user interface; a character-based interface.  [PJC]

OXFORD DICTIONARY

interface, n. & v.
--n.
1 esp. Physics a surface forming a common boundary between two regions.
2 a point where interaction occurs between two systems, processes, subjects, etc. (the interface between psychology and education).
3 esp. Computing an apparatus for connecting two pieces of equipment so that they can be operated jointly.
--v.tr. & intr. (often foll. by with) connect with (another piece of equipment etc.) by an interface.

THESAURUS

interface

ankle, articulation, border line, bound, boundary, boundary condition, boundary line, bourn, break boundary, breakoff point, butt, ceiling, cervix, circumscription, clinch, closure, compass, confine, connecting link, connecting rod, connection, coupling, cutoff, cutoff point, deadline, delimitation, determinant, division line, dovetail, elbow, embrace, end, extremity, finish, floor, frontier, gliding joint, hedge, high-water mark, hinge, hinged joint, hip, join, joining, joint, juncture, knee, knuckle, limen, limit, limitation, limiting factor, line, line of demarcation, link, low-water mark, lower limit, march, mark, mete, miter, mortise, neck, pivot, pivot joint, rabbet, scarf, seam, shoulder, start, starting line, starting point, stitch, suture, symphysis, target date, term, terminal date, terminus, threshold, tie rod, time allotment, toggle, toggle joint, union, upper limit, weld, wrist