Definition of gateway noun from the Oxford Advanced American Dictionary

     

    gateway

     noun
    noun
    NAmE//ˈɡeɪtweɪ//
     
     
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  1. 1an opening in a wall or fence that can be closed by a gate They turned through the gateway on the left. a fine 18th century brick gateway
  2. 2 [usually singular] gateway to/into… a place through which you can go to reach another larger place St. Louis is called The Gateway to the West.
  3. 3[usually singular] gateway to something a means of getting or achieving something A good education is the gateway to success. Increasingly our role is as a gateway to information.
  4. 4(computing) a device that connects two computer networks that cannot be connected in any other way
See the Oxford Advanced Learner's Dictionary entry: gateway