(transitive) To surround with, or as if with, a rampart.

Surrounded with a wall; enclosed with a rampart. / (anatomy) Surrounded by a ridge or elevation.

Third-person singular simple present indicative form of circumvallate

simple past tense and past participle of circumvallate

A rampart or other defensive entrenchment that entirely encircles the position being defended.

plural of circumvallation

present participle of circumvallate