Definition of aeronef in US English:

aeronef

noun

Aeronautics
rare, historical
  • A flying machine, an aircraft; specifically (a) a lighter-than-air flying machine, a balloon, especially a dirigible balloon, an airship; (b) a heavier-than-air flying machine, especially an aeroplane.

Origin

Mid 19th century. From French aéronef kind of airship, heavier-than-air aircraft from aéro- + nef ship.

Pronunciation

aeronef

/ˈɛːrə(ʊ)nɛf/