monoplane

noun

An airplane with only one pair of wings.

noun

A flying-machine or a gliding-machine which depends for sustention upon a single aeroplane (surface) or upon a single pair of aeroplanes laterally disposed. In a flying-machine of this type, M. Louis Bleriot crossed the English Channel, July 25, 1909. See aëroplane, n., 2.

noun

An airplane that has a single pair of wings

noun

an airplane with a single wing