BIPLANE
Source: 567
Bi″plane (?), n. [[Pref. bi- + plane.]] (Aëronautics) An aëroplane with two main supporting surfaces one above the other.
Source: 567
Bi″plane (?), n. [[Pref. bi- + plane.]] (Aëronautics) An aëroplane with two main supporting surfaces one above the other.