S: (n) area, expanse, surface area (the extent of a 2-dimensional surface enclosed within a boundary) "the area of a rectangle"; "it was about 500 square feet in area"
S: (n) acreage, land area (an area of ground used for some particular purpose (such as building or farming)) "he wanted some acreage to build on"
S: (n) footprint (the area taken up by some object) "the computer had a desktop footprint of 10 by 16 inches"
S: (n) erasure (a surface area where something has been erased) "another word had been written over the erasure"
S: (n) space, blank space, place (a blank area) "write your name in the space provided"
S: (n) space (one of the areas between or below or above the lines of a musical staff) "the spaces are the notes F-A-C-E"
S: (n) balk, baulk (the area on a billiard table behind the balkline) "a player with ball in hand must play from the balk"