Definition of circumvallation in English:

circumvallation

noun

  • A defensive wall of a castle or walled city.

    ‘a small stream encircled the space between the inner and outer circumvallations’
    • ‘In its original condition a small streamlet encircled the space between the inner and outer circumvallations.’
    • ‘This circumvallation had begun modestly enough as a yard-high rampart with stockade and ditch, but successive developments raised it to well over 30 feet.’
    • ‘At the corner of the circumvallation, on the north-west, there was a fish-pond.’
    • ‘The Athenians cut off Syracuse with two forts, and began a twin circumvallation, but left their northern walls incomplete, which proved disastrous.’
    • ‘Edinburgh had been walled in 1450, and so narrow was the circumvallation that the Cowgate was beyond the circle of towers.’
    castellation, parapet, rampart, balustrade, wall, bulwark, barbican, bastion
    View synonyms

Pronunciation

circumvallation

/səːkəmvaˈleɪʃ(ə)n/