Etymology: < Anglo-Norman and Middle French, French plane plane tree (c1176 in Old French as pleine ), sycamore (1549), banana tree (1665 in the passage translated in quot. 1666 at sense 3 (see note); now regional (northern and north-eastern) and only in sense ‘maple tree’) < classical Latin platanus (see platanus n.). Compare post-classical Latin plana, planum (1275, 1328 respectively in British sources).Use in sense 3 apparently arose as a result of confusion between plantain n.² and plantain n.³

Etymology: Partly < Anglo-Norman plane and Middle French plenne, plainne, plane (late 11th cent. in Old French in Rashi as plaine ; French plane ; < planer plane v.¹), and partly < post-classical Latin plana plane, adze (4th cent.) < planare plane v.¹It is uncertain whether the following earlier examples, respectively in senses 1 and 2, should be taken as showing the Middle English or the Anglo-Norman word:1350 in J. T. Fowler Extracts Acct. Rolls Abbey of Durham (1899) II. 550 Uno Plane et aliis instrumentis pro officio plumbar', emptis, 2 s. 5 d. 1399 in J. Raine Fabric Rolls York Minster (1859) 18 Instrumenta carpentariorum..Item, j plane de ere.

Etymology: < classical Latin plānum flat or level ground, (in geometry) a plane figure, use as noun of neuter singular of plānus plain adj.² Compare earlier plain n.¹The word superseded earlier uses of plain n.¹ in corresponding senses (see plain n.¹ 4); compare French plan (see plan n.). Compare plane adj. With plane-sided adj. at Compounds compare earlier plain-sided adj. at plain n.¹ Compounds 1b.

Etymology: < plane v.²

Etymology: Shortened < aeroplane n.

Etymology: Originally a variant of plain adj.², after French plan (1520 in Middle French; < classical Latin plānus flat, level: see plain adj.²); now (under the influence of classical Latin plānus), distinguished in form in senses below (see discussion at plain adj.², and compare plane n.³).With plane chart n. at Compounds 1 compare earlier plain chart n. at plain adj.² Compounds 3; with plane number n. at Compounds 1 compare plain number n. at plain adj.² Compounds 3; with plane scale n. at Compounds 1 compare earlier plain scale n. at plain adj.² Compounds 3.

Etymology: < Anglo-Norman planer, plainer, pleiner and Middle French planer (French planer ) to make flat, level, smooth (c1165 in Old French as past participle), to remove, erase (a1382), and their etymon post-classical Latin planare to make flat, level, smooth (late 4th cent. in Augustine), to explain (late 4th cent.) < classical Latin plānus plain adj.² In later use in sense 2 partly independently < plane n.² Compare Old Occitan planar (late 12th cent. in sense ‘polish, refine (verses)’; Occitan planar to smooth with a plane), Italian pianare (a1320; now rare or literary).In β. forms apparently influenced by association with plain adj.² The loss of the β. forms in modern use apparently reflects association with plane n.² in the surviving senses. In Middle English prefixed and unprefixed forms of the past participle are attested (see y- prefix).

Etymology: < Middle French, French planer (of a bird) to soar with outspread motionless wings (1377; earliest in Old French in sense ‘(in riding) to lower the height of the body over the neck of the horse’ (late 13th cent.)), (in swimming) to glide through the water (1564), to float through the air (1783 of clouds, 1848 of an aerostat) < plain flat (see plain adj.²).

Etymology: < plane n.⁵