Definition of vallum in English:

vallum

noun

  • (in ancient Rome) a defensive wall, rampart, or stockade.

    • ‘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.’
    • ‘There was a ditch on the north side, and a military zone on the south defined by an earthwork called the vallum.’

Origin

Latin, collective from vallus stake, palisade.

Pronunciation:

vallum

/ˈvaləm/