noun

• (geometry) A flat surface extending infinitely in all directions (e.g. horizontal or vertical plane); a bounded portion thereof.
  "Mirrors in the compartments have been canted out of the vertical plane to reduce reflections to the passengers when seated."
• (geometry) A flat surface extending infinitely in all directions (e.g. horizontal or vertical plane); a bounded portion thereof.
• (computing, Unicode) Any of 17 designated ranges of 2¹⁶ (65,536) sequential code points each.

noun

• (countable, carpentry) A tool for smoothing wood by removing thin layers from the surface.

verb

• (transitive, carpentry) To smooth (wood) with a plane.

noun

• (aircraft) An airplane; an aeroplane.
  "The plane is travelling impossibly slowly – 30km an hour – when it gently noses up and leaves the ground. With air beneath them, the rangy wings seem to gain strength; the fuselage that on the ground seemed flimsy becomes elegant, like a crane vaunting in flight. It seems not to fly, though, so much as float."
• (entomology) Any of various nymphalid butterflies, of various genera, having a slow gliding flight.
• (entomology) The butterfly Bindahara phocides, family Lycaenidae, of Asia and Australasia.