no-fly zone (plural no-fly zones)
- An airspace in which aircraft, especially military aircraft, are forbidden to fly.
- Synonym: NFZ
2022 March 4, David E. Sanger, Eric Schmitt, Julian E. Barnes, “Washington’s Newest Worry: The Dangers of Cornering Putin”, in The New York Times[1], →ISSN:Mr. Zelensky said he had asked Mr. Scholz and Mr. Macron to impose a no-fly zone over Ukraine.
an airspace in which aircraft, especially military aircraft, are forbidden to fly