noun

Etymology: ME < MFr plasne < L platanus < Gr platanos < platys, broad (see platy-): from its broad leaves

adjective

1. flat; level; even
2. Math.
   1. lying on a surface that is a plane
   2. of such surfaces

Etymology: L planus: see plain

noun

1. a surface that wholly contains every straight line joining any two points lying in it
2. a flat, level, or even surface
3. a level of development, achievement, existence, etc.
4. airplane
5. any airfoil; esp., a wing of an airplane

Etymology: L planum

noun

Etymology: OFr plaine < LL plana < planare, to plane, make level < L planus: see plain

transitive verb planed, planing plan′·ing

1. to make smooth or level with or as with a plane
2. to remove with or as with a plane: with off or away

intransitive verb

1. to work with a plane
2. to do the work of a plane

intransitive verb planed, planing plan′·ing

1. to soar or glide
2. to rise partly out of the water while in motion at high speed, as a hydroplane (sense ) does
3. to travel by airplane

Etymology: Fr planer < OFr plan, level surface (term used in falconry, in reference to position of bird's wings while soaring) < LL planare, to make level: see plane