noun
- a flat or level surface.
- Geometry. a surface generated by a straight line moving at a constant velocity with respect to a fixed point.
- Fine Arts. an area of a two-dimensional surface having determinate extension and spatial direction or position: oblique plane; horizontal plane.
- a level of dignity, character, existence, development, or the like: a high moral plane.
- Aeronautics.
- an airplane or a hydroplane: to take a plane to Dallas.
- a thin, flat or curved, extended section of an airplane or a hydroplane, affording a supporting surface.
- Architecture. a longitudinal section through the axis of a column.
adjective
- flat or level, as a surface.
- of or relating to planes or plane figures.
verb (used without object),planed, plan·ing.
- to glide or soar.
- (of a boat) to rise partly out of the water when moving at high speed.