Circumvallate
Circumvallate , transitive verb
[Latin circumvallatus, past participle of circumvallare to surround with a wall; circum + vallare to wall, from vallum rampart.]
To surround with a rampart or wall. — Johnson
Circumvallate , adjective
1.
Surrounded with a wall; inclosed with a rampart.
2.
(Anatomy) Surrounded by a ridge or elevation; as, the circumvallate papilla, near the base of the tongue.