(n): a man-made object taken as a whole
(n): the extended two-dimensional outer boundary of a three-dimensional object
(n): the line or plane indicating the limit or extent of something
(n): the outermost level of the land or sea
(n): a relatively thin sheetlike expanse or region lying over or under another
(n): a superficial aspect as opposed to the real nature of something
(n): a distinct feature or element in a problem
(n): information that has become public
(n): knowledge that is available to anyone
(n): a device that provides reactive force when in motion relative to the surrounding air; can lift or control a plane in flight
(n): an instrumentality invented for a particular purpose
(v): come to the surface
(v): travel up, "We ascended the mountain"
(v): put a coat on; cover the surface of; furnish with a surface
(v): provide with a covering or cause to be covered
(v): appear or become visible; make a showing
(v): come into sight or view
(adj): vs. subsurface) (vs. overhead) -- (on the surface
(adj): on or above the surface of the ground
(adj): constructed at ground level
(adj): (of mines and mining) worked from the exposed surface
