Countervallation

from The Collaborative International Dictionary of English v.0.48

Countervallation \Coun`ter*val*la"tion\ (-v?l-l?"s??n), n.
   (Fort.)
   See {Contravallation}.
   [1913 Webster]

from Moby Thesaurus II by Grady Ward, 1.0

20 Moby Thesaurus words for "countervallation":
      barbed wire, contravallation, dike, fences, hedge, hedgerow,
      hoarding, paling, palisade, parapet, railing, rampart,
      retaining wall, stockade, stone wall, trellis, vallation, vallum,
      weir, zigzag fence

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