plane /pleɪn/noun 12verb 3adjective 1forms 5phrases 1 noun12 •a vehicle that has wings and an engine and travels through the airBoeing said it agreed with the Federal Aviation Administration’s decision to ground the 737 Max 9 planes while they are inspected. — 2024 •A level or flat surface. •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. — 1979 •An imaginary plane which divides the body into two portions. •A level of existence or development. •A tool for smoothing wood by removing thin layers from the surface. •A deciduous tree of the genus Platanus. •A sycamore. •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. •Any of various nymphalid butterflies, of various genera, having a slow gliding flight. •The butterfly Bindahara phocides, family Lycaenidae, of Asia and Australasia. verb3 •To smooth (wood) with a plane. •To glide or soar. •To move in a way that lifts the bow out of the water. adjective1 •Of a surface: flat or level. formsplaned · planing · planes · planer · planest Phrases with plane land the planeTo abort an unsuccessful enterprise, especially an unsuccessful political campaign.