A passage through a fence or wall; a gate; also, a frame, arch, etc., in which a gate in hung, or a structure at an entrance or gate designed for ornament or defense.
- An opening or a structure framing an opening, such as an arch, that may be closed by a gate.
- Something that serves as an entrance or a means of access: a gateway to success; the gateway to the West.
- Software or hardware that enables communication between computer networks that use different communications protocols. Also called router2.