Foregate

The Lower town which joins to this, is fortified with a Wall and Castle, and a fore-gate at the entrance.

Source: wiktionary

… and, where the nature of the thing admitteth access, there is first a foregate and a wall furnished with turrets, which enclose four or five acres, …

Source: wiktionary

And men go back to it today and will continue through the centuries to go, and say to themselves, as they pass through the foregates, the Propylaea, and come out through those marvellous shadows into the sunlight and see across there, …

Source: wiktionary

Further excavation revealed that there had been in the earliest period, perhaps continued to all later times, a foregate, a kind of outer rampart to mask the entrance to the gate so as to require everyone who approached it to do so by a narrow entrance directly in front of the gate and so subject to a concentrated fire of projectiles from the defenders of the gate. This foregate was some fifteen feet in front of the gate itself. At either side of the gate was a great fortress or buttress flanked by a heavy revetement, a fortress also on the north side and a buttress on the south side of the gate.

Source: wiktionary