2. Hence: A heavier-than-air flying machine using such a device to provide lift; an airplane. In a modern aeroplane, the airfoils are called the wings, and most of the lift is derived from these surfaces. In contrast to helicopters, the wings are fixed to the passenger compartment (airframe) and do not move relative to the frame; thus such a machine is called a fixed-wing aircraft. These machines are called monoplanes, biplanes, triplanes, or quadruplanes, according to the number of main supporting planes (wings) used in their construction. After 1940 few planes with more than one airfoil were constructed, and these are used by hobbyists or for special purposes. Being heavier than air they depend for their levitation on motion imparted by the thrust from either propellers driven by an engine, or, in a jet plane, by the reaction from a high-velocity stream of gases expelled rearward from a jet engine. They start from the ground by a run on small wheels or runners, and are guided by a steering apparatus consisting of horizontal and vertical movable planes, which usually form part of the wings or tail. There are many varieties of form and construction, which in some cases are known by the names of their inventors. In U.S., an aeroplane is usually called an airplane or plane. [ Webster 1913 Suppl. +PJC ]

☞ The “Florida moss” (Tillandsia, many tropical orchids, and most mosses and lichens are air plants. Those which are lodged upon trees, but not parasitic on them, such as the Spanish moss Tillandsia usneoides), are epiphytes. [ 1913 Webster ]

Aplanatic focus of a lens (Opt.), the point or focus from which rays diverging pass the lens without spherical aberration. In certain forms of lenses there are two such foci; and it is by taking advantage of this fact that the best aplanatic object glasses of microscopes are constructed. [ 1913 Webster ]

I did not think a look,
Or a poor word or two, could have displanted
Such a fixed constancy. Beau. & Fl. [ 1913 Webster ]

2. To strip of what is planted or settled; as, to displant a country of inhabitants. Spenser. [ 1913 Webster ]

2. The fruit of the eggplant{ 1 }. [ PJC ]

2. (Hort.) A grass plat; a lawn. Simmonds. [ 1913 Webster ]

3. Any clear, level space used for public walks or drives; esp., a terrace by the seaside. [ 1913 Webster ]

2. That which explains or makes clear; as, a satisfactory explanation. [ 1913 Webster ]

3. The meaning attributed to anything by one who explains it; definition; interpretation; sense. [ 1913 Webster ]

Different explanations [ of the Trinity ]. Bp. Burnet. [ 1913 Webster ]

4. A mutual exposition of terms, meaning, or motives, with a view to adjust a misunderstanding, and reconcile differences; reconciliation; agreement; as, to come to an explanation.

Syn. -- Definition; description; explication; exposition; interpretation; detail. See Definition. [ 1913 Webster ]

2. A projecting plane or fin on a hydroplane{ 3 } to lift the moving boat on top of the water; also, a gliding boat. [ Webster 1913 Suppl. ]

3. a powered surface boat fitted with planes (hydroplanes{ 2 }) projecting below the hull, designed to lift the boat, when moving rapidly, so that the hull itself is lifted out of the water and the boat is supported by the hydrodynamic forces of the water on the hydroplanes{ 2 }, thus permitting higher speeds; formerly called a gliding boat. [ Webster 1913 Suppl. +PJC ]

2. to move through a body of water supported by the hydrodynamic forces on a surface, similar in principle to a hydroplane{ 3 }; -- said, e. .g, of automobiles skidding on a shallow patch of water on a road when moving at high speed, thus causing the tires to lose contact with the road surface. [ PJC ]

Minds well implanted with solid . . . breeding. Milton. [ 1913 Webster ]