Definition of vallum in English:
(In ancient Rome) a defensive wall, rampart, or stockade.
- There was a ditch on the north side, and a military zone on the south defined by an earthwork called the vallum.
- The final addition was the ‘vallum’ to the rear of the wall.
- A vallum some 27 feet wide and nine feet deep was dug as further protection for the wall.
Latin, collective from vallus 'stake, palisade'.