Dictionary definitions
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biplane
From The Collaborative International Dictionary of English v.0.48:
Biplane \Bi"plane\, n. [Pref. bi- + plane.] (A["e]ronautics) An a["e]roplane with two main supporting surfaces one above the other. [Webster 1913 Suppl.] .
From The Collaborative International Dictionary of English v.0.48:
Biplane \Bi"plane\, a. (A["e]ronautics) Having, or consisting of, two superposed planes, a["e]rocurves, or the like; of or pertaining to a biplane; as, a biplane rudder. [Webster 1913 Suppl.]
