What does the word zone mean?

Usage examples for zone

  1. But there's the fringe zone between the two- the Twilight Zone. – The Planet Strappers by Raymond Zinke Gallun
  2. The Mexicans would not concede the right of the United States to send an armed expedition into their country at any time, and the Americans refused to accept limitations on the kind of troops that they might employ or on the zone of their operations. – The Hispanic Nations of the New World Volume 50 in The Chronicles Of America Series by William R. Shepherd
  3. She felt suddenly old and discouraged and helpless; out of their zone of youth and love. – Poor, Dear Margaret Kirby and Other Stories by Kathleen Norris
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