Definition of "Plane" :

noun: an aircraft that has a fixed wing and is powered by propellers or jets

"The flight was delayed due to trouble with the airplane."

noun: a carpenter's hand tool with an adjustable blade for smoothing or shaping wood

"The cabinetmaker used a plane for the finish work."

noun: a power tool for smoothing or shaping wood

noun: (mathematics) an unbounded two-dimensional shape

"We will refer to the plane of the graph as the X-Y plane."

noun: a level of existence or development

"He lived on a worldly plane."

verb: cut or remove with or as if with a plane

verb: make even or smooth, with or as with a carpenter's plane

"Plane the top of the door."

verb: travel on the surface of water

adjective: having a surface without slope, tilt in which no part is higher or lower than another

"A plane surface."