The whole thing looked like the outer perimeter of a nineteenth-century prison.

And this was only the outer perimeter of the harbor defenses.

The outer perimeter is a square with an arch in the middle.

We're on the outer perimeter now; this is where we live and work.

The outer perimeter was probably in place before Anders had ever entered the office.

There is a little too much action in the outer perimeter.

I talked with my men who found you on our outer perimeters.

The sun was low behind him,when he reached the outer perimeter of the base.

Another line of them had reached the outer perimeter.

Then he told the squad and team leaders to watch the front beyond the outer perimeter, to look for more targets coming into range.