plane plane /ˈpleɪn/

adjective

1. () Having a surface without slope, tilt in which no part is higher or lower than another  ( plane , level , flat )
   having a surface without slope, tilt in which no part is higher or lower than another
    A flat desk
   a flat desk
    Acres of level farmland
   acres of level farmland
    A plane surface
   a plane surface
    Skirts sewn with fine flat seams
   skirts sewn with fine flat seams
   

noun

1. () An aircraft that has a fixed wing and is powered by propellers or jets  ( aeroplane [British] , airplane [ N. American] , plane )
   an aircraft that has a fixed wing and is powered by propellers or jets
    The flight was delayed due to trouble with the airplane
   the flight was delayed due to trouble with the airplane
   
   
2. () (mathematics) an unbounded two-dimensional shape  ( sheet , plane )
   (mathematics) an unbounded two-dimensional shape
    We will refer to the plane of the graph as the X-Y plane
   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
   any line joining two points on a plane lies wholly on that plane
   
   
3. () A level of existence or development  ( plane )
   a level of existence or development
    He lived on a worldly plane
   he lived on a worldly plane
   
4. A carpenter's hand tool with an adjustable blade for smoothing or shaping wood  ( carpenter's plane , plane , woodworking plane )
   a carpenter's hand tool with an adjustable blade for smoothing or shaping wood
    The cabinetmaker used a plane for the finish work
   the cabinetmaker used a plane for the finish work
   
   
5. A power tool for smoothing or shaping wood  ( plane , planer , planing machine )
   a power tool for smoothing or shaping wood
   
   

verb

1. () Cut or remove with or as if with a plane  ( shave , plane )
   cut or remove with or as if with a plane
    The machine shaved off fine layers from the piece of wood
   The machine shaved off fine layers from the piece of wood
   
2. Make even or smooth, with or as with a carpenter's plane  ( plane )
   make even or smooth, with or as with a carpenter's plane
    Plane the top of the door
   plane the top of the door
   
3. Travel on the surface of water  ( plane , skim )
   travel on the surface of water