vallatory

val·la·tion

 (vă-lā′shən)
n.
1. An earthwork wall used for military defense; a rampart.
2. The process of planning or erecting earth fortifications.

[Late Latin vallātiō, vallātiōn-, from Latin vallātus, past participle of vallāre, to surround with a rampart, from vallum, rampart, from vallus, stake.]

val′la·to′ry (văl′ə-tôr′ē) adj.