Definition of Plane

Noun: plane pleyn

An aircraft that has a fixed wing and is powered by propellers or jets
"the flight was delayed due to trouble with the plane";
- airplane [N. Amer], aeroplane [Brit]
(mathematics) an unbounded two-dimensional shape
"any line joining two points on a plane lies wholly on that plane"; "we will refer to the plane of the graph as the X-Y plane";
- sheet
A level of existence or development
"he lived on a worldly plane"
A power tool for smoothing or shaping wood
- planer, planing machine
A carpenter's hand tool with an adjustable blade for smoothing or shaping wood
"the cabinetmaker used a plane for the finish work";
- carpenter's plane, woodworking plane
Any of several trees of the genus Platanus having thin pale bark that scales off in small plates and lobed leaves and ball-shaped heads of fruits
- plane tree, sycamore, platan

Verb: plane pleyn

Cut or remove with or as if with a plane
"The machine planed off fine layers from the piece of wood";
- shave
Travel on the surface of water
- skim
Make even or smooth, with or as with a carpenter's plane
"plane the top of the door"

Adjective: plane pleyn

Having a surface without slope, tilt in which no part is higher or lower than another
"a plane surface";
- flat, level