gateway

The definition of a gateway is an opening or entrance.

(noun)

An example of a gateway is the doorway of a barn.

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See gateway in Webster's New World College Dictionary

noun

  1. an entrance as in a wall, fitted with a gate
  2. a means of access

See gateway in American Heritage Dictionary 4

noun
  1. An opening or a structure framing an opening, such as an arch, that may be closed by a gate.
  2. Something that serves as an entrance or a means of access: a gateway to success; the gateway to the West.
  3. Software or hardware that enables communication between computer networks that use different communications protocols. Also called router2.

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