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

monoplane

noun
 
/ˈmɒnəpleɪn/
 
/ˈmɑːnəpleɪn/
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  1. an early type of plane with one set of wings compare biplaneTopics Transport by airc2
See monoplane in the Oxford Advanced American Dictionary
hat-trick
noun
 
 
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