This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. An opening or a structure framing an opening, such as an arch, that may be closed by a gate.

n. Something that serves as an entrance or a means of access: a gateway to success; the gateway to the West.

n. Software or hardware that enables communication between computer networks that use different communications protocols. Also called router2.

n. An entrance capable of being blocked by use of a gate.

n. Any point that represents the beginning of a transition from one place or phase to another.

n. A point at which freight moving from one territory to another is interchanged between transportation lines.

n. In wireless internet, an access point with additional software capabilities such as providing NAT and DHCP, which may also provide VPN support, roaming, firewalls, various levels of security, etc.

n. 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.

n. A passage; an entrance; an opening which is or may be closed with a gate, as in a fence or wall.

n. A frame or an arch in which a gate is hung: sometimes extended to the gate-house or gate-tower surmounting or flanking an entrance or a gate, and designed for ornament or defense.

n. A means of ingress or egress generally—more frequently of ingress; an avenue; a passage; an approach.

n. In coal-mining, same as gate.

n. an entrance that can be closed by a gate

"South Carolina holds what it calls the gateway-to-the-South Republican primary."

gateways   

entry    entranceway    entrée    entrance    entryway   

gateway drug   

gate   

portal    staircase    archway    courtyard    gate    edifice    doorway    rampart    tower    façade