plane¹ /plān/

1. A surface of which it is true that, if any two points on the surface be taken, the straight line joining them will lie entirely on the surface (geometry)
2. Any flat or level material surface
3. One of the thin horizontal structures used as wings and tail to sustain or control aeroplanes in flight
4. Short for aeroplane or airplane (also 'plane)
5. An act of planing or soaring
6. In mines, a main road for the transport of coal or other mineral
7. Any grade of life or of development or level of thought or existence

1. Having the character of a plane
2. Relating to, lying in, or confined to a plane
3. Level
4. Smooth

To make plane or smooth (see also plane²)

1. To travel by aeroplane
2. To soar
3. To volplane
4. (of a boat) to skim across the surface of the water

planar /plānˈər/ adjective

1. Relating to a plane
2. Lying in a single plane, flat

planation /plə-nāˈshən/ noun

Making level

planer /plānˈər/ noun

1. Someone who levels or makes plane
2. A smoothing instrument (see also plane²)
3. A wooden block beaten with a mallet to level a forme of type (printing)

planar diode noun

One with plane parallel electrodes

plane chart noun

A chart used in plane sailing, the lines of longitude and latitude being projected onto a plane surface, so being represented parallel

planeˈ-polarized or planeˈ-polarised adjective

(of light) consisting of vibrations in one plane only

plane sailing noun

1. The calculation of a ship's place in its course as if the earth were flat instead of spherical
2. See also plain sailing under plain¹

plane table noun

1. An instrument used in field-mapping, with a sighting-telescope for observing objects, whose angles may be noted on a paper on the table of the instrument
2. An inclined table on which ore is dressed

transitive verb

To survey with a plane table

planing bottom noun (aerodynamics)

The part of the undersurface of a flying-boat hull that provides hydrodynamic lift

plane² /plān/

1. A carpenter's tool for producing a smooth surface by paring off shavings
2. Any similar smoothing or paring tool or machine

To smooth or remove with a plane (see also plane¹)

plāˈner noun

1. Someone who uses a plane
2. A tool or machine for planing

plāˈning-machine noun

A machine for planing wood or metals

plane³ /plān/

1. Any tree of the genus Platanus, esp the oriental plane (P. orientalis) and the N American plane or buttonwood (P. occidentalis), trees with palmatifid leaves shedding their bark in thin slabs
2. In Scotland, the sycamore or great maple (Acer pseudoplatanus)

• rumple-banes
• rumpled
• rumples
• rumpless
• rumplier
• rumpliest
• rumpling
• rumply
• Rump Parliament
• rump-post
• rump-posts
• rumps
• rump steak
• rump steaks
• rumpti-iddity
• rum punch
• rumpus
• rumpuses
• rumpus room
• rumpus rooms
• rumpy
• rumpy-pumpy
• rum-runner
• rum-running
• rums