The Collaborative International Dictionary of English v.0.48:

Shammy \Sham"my\, n. [F. chamious a chamois, shammy leather. See
   Chamois.]
   1. (Zool.) The chamois.
      [1913 Webster]

   2. A soft, pliant leather, prepared originally from the skin
      of the chamois, but now made also from the skin of the
      sheep, goat, kid, deer, and calf. See Shamoying.
      [Written also chamois, shamoy, and shamois.]
      [1913 Webster] Shamois

The Collaborative International Dictionary of English v.0.48:

Shamois \Sham"ois\, Shamoy \Sham"oy\, n.
   See Shammy.
   [1913 Webster]