adj.
1.having a horizontal surface in which no part is higher or lower than another plane n.
1.an aircraft that has a fixed wing and is powered by propellers or jets
2.(mathematics) an unbounded two-dimensional shape
3.a level of existence or development
4.a power tool for smoothing or shaping wood
5.a carpenter's hand tool with an adjustable blade for smoothing or shaping wood plane v.
1.cut or remove with or as if with a plane
2.travel on the surface of water
3.make even or smooth, with or as with a carpenter's plane