plane
/pleɪn/ noun C2- A level or flat surface.
- A flat surface extending infinitely in all directions (e.g. horizontal or vertical plane); a bounded portion thereof.
- An imaginary plane which divides the body into two portions.
- A level of existence or development. · astral plane
- A roughly flat, thin, often moveable structure used to create lateral force by the flow of air or water over its surface, found on aircraft, submarines, etc.
- Any of 17 designated ranges of 2¹⁶ (65,536) sequential code points each.
Plural planes
From the library
Debray was admitted to the house for this grand ceremony, but on the same plane with everyone else, and without any particular privilege.
Of a branch of a plane, with a knife of my own,
“My dear Watson, you evidently did not realize my meaning when I said that this man may be taken as being quite on the same intellectual plane as myself.
“No, monsieur, I swear to you, by my hopes of salvation, I will tell you all, for the Abbé Busoni himself only knew a part of my secret; but, I pray you, go away from that plane-tree.
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