Source : Webster's Revised Unabridged Dictionary (1913)

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

         I heard the broadsword's deadly clang.   --Sir W.
                                                  Scott.

Source : WordNet®

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