'Gates' in the Bible

But during the night an angel of the Lord opened the gates of the prison, and taking them out he said,

But their laying await was known of Saul. And they watched the gates day and night to kill him.

Then the priest of Jupiter, which was before their city, brought oxen and garlands unto the gates, and would have done sacrifice with the people.

The whole city was stirred up, and the people rushed together. They seized Paul, dragged him out of the temple complex, and at once the gates were shut.