surface: the outer boundary of an artifact or a material layer constituting or resembling such a boundary; "there is a special cleaner for these surfaces"; "the cloth had a pattern of red dots on a white surface" surface: the extended two-dimensional outer boundary of a three-dimensional object; "they skimmed over the surface of the water"; "a brush small enough to clean every dental surface"; "the sun has no distinct surface" surface, Earth's_surface: the outermost level of the land or sea; "earthquakes originate far below the surface"; "three quarters of the Earth's surface is covered by water" surface: a superficial aspect as opposed to the real nature of something; "it was not what it appeared to be on the surface" open, surface: information that has become public; "all the reports were out in the open"; "the facts had been brought to the surface" airfoil, aerofoil, control_surface, surface: a device that provides reactive force when in motion relative to the surrounding air; can lift or control a plane in flight surface, come_up, rise_up, rise: come to the surface coat, surface: put a coat on; cover the surface of; furnish with a surface; "coat the cake with chocolate" come_on, come_out, turn_up, surface, show_up: appear or become visible; make a showing; "She turned up at the funeral"; "I hope the list key is going to surface again" surface: on the surface; "surface materials of the moon" skin-deep, superficial, surface(a): involving a surface only; "her beauty is only skin-deep"; "superficial bruising"; "a surface wound"