Definition of fly-by noun from the Oxford Advanced Learner's Dictionary



    BrE BrE//ˈflaɪ baɪ//
    ; NAmE NAmE//ˈflaɪ baɪ//
    (pl. fly-bys)
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  1. 1the flight of a spacecraft near a planet to record data
  2. 2(also flyover) (both North American English) (British English fly-past) a special flight by a group of aircraft, for people to watch at an important ceremony