Definition of monoplane noun from the Oxford Advanced Learner's Dictionary

 

monoplane

 noun
noun
BrE BrE//ˈmɒnəpleɪn//
 
; NAmE NAmE//ˈmɑːnəpleɪn//
 
Aircraft
 
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an early type of plane with one set of wings compare biplane See related entries: Aircraft
See the Oxford Advanced American Dictionary entry: monoplane