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  1. an airplane with three supporting wings, one above another: a design used mainly in the early history of the airplane.

Origin of triplane

First recorded in 1905–10; tri- + plane1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for triplane

Historical Examples

  • Here was the principle of the modern biplane and triplane in its infancy.

    The Romance of Aircraft

    Lawrence Yard Smith

  • It is a tiny Curtiss triplane, the span of whose wings is only 25 feet.

    The Romance of Aircraft

    Lawrence Yard Smith

  • I mean that when Andy tries to fly in his triplane it will be our turn to laugh.

  • "Yes, that's where the young master is making his triplane," answered the man.

  • It was followed by the others, two monoplanes and a triplane.

British Dictionary definitions for triplane


  1. an aeroplane having three wings arranged one above the other
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

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