The Collaborative International Dictionary of English v.0.48:

Rampart \Ram"part\, v. t. [imp. & p. p. Ramparted; p. pr. &
   vb. n. Ramparting.]
   To surround or protect with, or as with, a rampart or
   ramparts.
   [1913 Webster]

         Those grassy hills, those glittering dells,
         Proudly ramparted with rocks.            --Coleridge.
   [1913 Webster]

   Rampart gun (Fort.), a cannon or large gun for use on a
      rampart and not as a fieldpiece.
      [1913 Webster]