[1] : The Collaborative International Dictionary of English v.0.48

mahound \ma`hound\, n.
   a contemptuous name for mohammed; hence, an evil spirit; a
   devil. obs.
   1913 webster

         who's this, my mahound cousin ?          --beau.  fl.
   1913 webster

[2] : WordNet (r) 2.0

mahound
     n : the arab prophet who founded islam 570-632 syn: mohammed,
          mohammad, muhammad, mahomet
see also:
mohammed mohammad muhammad mahomet 

Mahound >> M Words
Mahound, definition of term: Mahound
mahound_pag1.html