Definition of "no-fly zone" []

• Airspace in which certain aircraft, especially military aircraft, are forbidden to fly. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "However, the only reason that Ansar al-Islam could exist in that part of Kurdish Iraq was because the U.S. Air Force had been enforcing a no-fly zone in the region for more than a decade, which meant that the Pentagon had more control over that part of Kurdistan than Saddam did."
• "The air force is still enforcing a no-fly zone over Promise City."
• "Diplomatic Disagreements Libya : South Africa agreed to no-fly zone but would prefer African Union to negotiate a cease-fire instead of continuing NATO campaign to force Moammar Gadhafi to step down."