Definition of triplane in US English:

triplane

noun

  • An early type of airplane with three pairs of wings, one above the other.

    • ‘The film-makers have rounded up a fine-looking collection of biplanes and triplanes, which contributes to the authentic feel of the film.’
    • ‘In 1920 the Army Engineering Division issued specifications for a large triplane bomber to the Witteman-Lewis Company of Teterboro, New Jersey.’
    • ‘Yet, the greatest ace of the war chose the Fokker triplane, eventually losing his life in it.’
    • ‘In 1849, Cayley designed and built a full-sized triplane glider, which carried a ten-year-old boy several yards through the air down a hill at Brompton Dale.’

Pronunciation

triplane

/ˈtrīplān//ˈtraɪpleɪn/