Secondly, there is the so-called " Vallum," in reality no vallum at all, but a broad flat-bottomed ditch out of which the earth has been cast up on either side into g Bremen (Rochester) ijffabilasrciu.n
A double fosse and vallum, with the outer and inner court lines, can be traced.
Early borrowings like wine (Latin vinum), wall (Latin vallum), retain the w sound and are therefore spelt with w.
The meaning of the vallum is much more doubtful.
When the barrow was of earth, this was effected by an encircling trench or a low vallum.