zone - definition and synonyms

noun [countable] 

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  1. an area that has an important or typical feature
    the danger zone:

    Climbing another 50 feet would bring her out of the danger zone.

    1. a.
      an area where a particular activity is allowed or not allowed

      a combat zone

      a free-trade zone

      a traffic-free/smoke-free/alcohol-free zone

      a loading zone

    2. b.
    3. c.
      a division of a larger area that is divided according to a system

      Your ticket is valid for Zones 1 and 2 only.