- 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 [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[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(computing) a device that connects two computer networks that cannot be connected in any other way