The Collaborative International Dictionary of English v.0.48:

Swound \Swound\, v. & n.
   See Swoon, v. & n. [Prov. Eng. or Archaic] --Shak. Dryden.
   [1913 Webster]

         The landlord stirred
         As one awaking from a swound.            --Longfellow.
   [1913 Webster]