An earthwork wall used for military defense; a rampart.
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 (vāl'ə-tôr'ē, -tōr'ē) adj.