#1 plane n. [airplane, aeroplane] an aircraft that has a fixed wing and is powered by propellers or jets; "the flight was delayed due to trouble with the airplane". wn
#2 plane n. [sheet] (mathematics) an unbounded two-dimensional shape; "we will refer to the plane of the graph as the X-Y plane"; "any line joining two points on a plane lies wholly on that plane". wn
#3 plane n. a level of existence or development; "he lived on a worldly plane". wn
#4 plane v. [shave] cut or remove with or as if with a plane; "The machine shaved off fine layers from the piece of wood". wn
#5 plane s. [flat, level] having a surface without slope, tilt in which no part is higher or lower than another; "a flat desk"; "acres of level farmland"; "a plane surface"; "skirts sewn with fine flat seams". wn
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