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English definition of “no-fly zone”

no-fly zone

noun [C]     /ˌnəʊˈflaɪˌzəʊn/ US  /ˌnoʊˈflaɪˌzoʊn/
an area above a country that aircraft from other countries may not enter without risking attack : Aircraft will enforce the no-fly zone to protect UN forces on the ground .AviationTravelling by aircraftMovement through the air
(Definition of no-fly zone noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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