broadsword

from WordNet (r) 3.0 (2006)

broadsword
    n 1: a sword with a broad blade and (usually) two cutting edges;
         used to cut rather than stab

from The Collaborative International Dictionary of English v.0.48

Broadsword \Broad"sword`\, n.
   A sword with a broad blade and a cutting edge; a claymore.
   [1913 Webster]

         I heard the broadsword's deadly clang.   --Sir W.
                                                  Scott.
   [1913 Webster]