noun
- an airplane with two main wings, one above the other
Examples
- The Wright brothers flew the first successful biplane in 1903.
- Old biplanes were common in early aviation and World War I.
- The vintage biplane performed loops and rolls at the air show.
- Many crop dusters are biplanes because of their stability at low speeds.
- The museum displayed a restored biplane from the 1920s.
- Learning to fly a biplane requires different skills than modern aircraft.