Open English Wordnet
Nouns
(n)airplane, aeroplane, planean aircraft that has a fixed wing and is powered by propellers or jets“the flight was delayed due to trouble with the airplane” (n)plane, 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” (n)planea level of existence or development“he lived on a worldly plane” Verbs
(v)plane, shavecut or remove with or as if with a plane“The machine shaved off fine layers from the piece of wood” (v)planemake even or smooth, with or as with a carpenter's plane“plane the top of the door” Adjectives
(s)flat, level, planehaving 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”