'Fortress' in the Bible

Be ashamed, O Sidon, for the sea says this, O fortress of the sea: "I have not gone into labor or given birth; I have not raised young men or brought up young women."

Wail, you large ships, for your fortress is destroyed!

Indeed, you have made the city into a heap of rubble, the fortified town into a heap of ruins; the fortress of foreigners is no longer a city, it will never be rebuilt.

For the fortress is neglected; the once-crowded city is abandoned. Hill and watchtower are permanently uninhabited. Wild donkeys love to go there, and flocks graze there.