- an airplane with two sets of wings, one above and usually slightly forward of the other.
Origin of biplane
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for biplane
Doyle makes routine flights over the 1,700-acre compound in his biplane.Warren Jeffs' Flock in Denial
August 5, 2011
There goes a Belgian biplane up, to get after the bold German!The Boy Scouts on Belgian Battlefields
Lieut. Howard Payson
All sprang forward to do what they could to save the biplane from destruction.
They looked the biplane over as best they could in the semi-darkness.
He knew that their very lives depended on how he handled the biplane.
Then the biplane was brought forth, and Captain Colby made an examination.
- a type of aeroplane having two sets of wings, one above the otherCompare monoplane
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
Word Origin and History for biplane
Online Etymology Dictionary, © 2010 Douglas Harper