plane1
¦ noun
1. a flat surface on which a straight line joining any two points would wholly lie.
an imaginary flat surface through or joining material objects.
a flat surface producing lift by the action of air or water over and under it.
2. a level of existence or thought: the spiritual plane.
¦ adjective
1. completely level or flat.
2. relating to only two-dimensional surfaces or magnitudes: plane and solid geometry.
¦ verb
1. (of a bird or an airborne object) soar without moving the wings; glide.
2. (of a boat, surfboard, etc.) skim over the surface of water as a result of lift produced hydrodynamically.
Origin
C17: from L. planum 'flat surface', neut. of planus 'plain' (adjective).
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plane2
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plane3
¦ noun a tool consisting of a block with a projecting steel blade, used to smooth a wooden surface by paring shavings from it.
¦ verb smooth with a plane.
Origin
ME: from a var. of obs. Fr. plaine 'planing instrument', from late L. plana, from L. planare 'make level'.
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plane4
(also plane tree)
¦ noun a tall spreading tree of the northern hemisphere, with maple-like leaves and bark which peels in uneven patches. [Genus Platanus.]
Origin
ME: from OFr., from L. platanus, from Gk platanos, from platus 'broad'.