plane
Definitions
A flat surface on which a straight line joining any two points on it would wholly lie.
A powered flying vehicle with fixed wings and a weight greater than that of the air it displaces.
A tool consisting of a block with a projecting blade, used for smoothing or shaping wood.
Examples
The plane landed safely on the runway after a long flight.
The carpenter used a plane to smooth the rough surface of the wooden board.
We need to consider the problem from a different plane of thought.