an aeroplane having three wings arranged one above the other
triplane in American English
(ˈtraɪˌpleɪn)
noun
an early type of airplane with three sets of wings arranged one above another
triplane in American English
(ˈtraiˌplein)
noun
an airplane with three supporting wings, one above another: a design used mainly in the early history of the airplane
Word origin
[1905–10; tri- + plane1]This word is first recorded in the period 1905–10. Other words that entered Englishat around the same time include: aspect ratio, jazz, one-shot, push-up, stabilizer