definition of
expanse

[1] #1 expanse n. [sweep] a wide scope; "the sweep of the plains". wn

[2] #2 expanse n. [area, 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". wn

[3] #3 expanse n. a wide and open space or area as of surface or land or sky. wn