vallum

[Latin, from vallus =a stake.] A rampart; a palisaded rampart; a line of entrench ment; specifically, the rampart with which the Romans surrounded their camps. It consisted of two parts, the agger or mound of earth, and the sudes or palisades, which were driven into the ground to secure and strengthen it. "The vallum or ridged bank, seeming a vicinal way, if not a rampart, cro ing the Ikenild-street within two miles of Eueleme and and near Nuffield, is called Grimes ditch."- Warton : Hist. of Kidding ton , p. 55.