1 an 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 [usuallysing.] ~ to / into... a place through which you can go to reach another larger place:
Perth, the gateway to Western Australia
3 [usuallysing.] ~ to sth a means of getting or achieving sth:
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 (= systems of linked computers) that cannot be connected in any other way
