Source : Webster's Revised Unabridged Dictionary (1913)

Scimiter \Scim"i*ter\, Scimitar \Scim"i*tar\, n. [F. cimeterre,
   cf. It. scimitarra, Sp. cimitarra; fr. Biscayan cimetarra
   with a sharp edge; or corrupted from Per. shimsh[=i]r.]
   1. A saber with a much curved blade having the edge on the
      convex side, -- in use among Mohammedans, esp., the Arabs
      and persians. [Written also {cimeter}, and {scymetar}.]

   2. A long-handled billhook. See {Billhook}.

   {Scimiter pods} (Bot.), the immense curved woody pods of a
      leguminous woody climbing plant ({Entada scandens})
      growing in tropical India and America. They contain hard
      round flattish seeds two inches in diameter, which are
      made into boxes.

Source : WordNet®

scimitar
     n : a curved oriental saber; the edge is on the convex side of
         the blade