plane
adjective
1. having a surface without slope, tilt in which no part is higher or lower than another
- a plane surface
noun
1. an aircraft that has a fixed wing and is powered by propellers or jets
- the flight was delayed due to trouble with the airplane
Similar word(s): aeroplane, airplane
Definition categories: man–made
2. (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
Similar word(s): sheet
Definition categories: shape, form
3. a level of existence or development
- he lived on a worldly plane
Definition categories: state, degree, level, point, stage
4. a power tool for smoothing or shaping wood
Similar word(s): planer
Definition categories: man–made
5. a carpenter's hand tool with an adjustable blade for smoothing or shaping wood
- the cabinetmaker used a plane for the finish work
Definition categories: man–made