From WordNet (r) 3.0 (2006):
plane
adj 1: 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" [syn: flat, level, plane]
n 1: an aircraft that has a fixed wing and is powered by
propellers or jets; "the flight was delayed due to trouble
with the airplane" [syn: airplane, aeroplane, plane]
2: (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"
[syn: plane, sheet]
3: a level of existence or development; "he lived on a worldly
plane"
4: a power tool for smoothing or shaping wood [syn: plane,
planer, planing machine]
5: a carpenter's hand tool with an adjustable blade for
smoothing or shaping wood; "the cabinetmaker used a plane for
the finish work" [syn: plane, carpenter's plane,
woodworking plane]
v 1: cut or remove with or as if with a plane; "The machine
shaved off fine layers from the piece of wood" [syn:
plane, shave]
2: travel on the surface of water [syn: plane, skim]
3: make even or smooth, with or as with a carpenter's plane;
"plane the top of the door"