The Collaborative International Dictionary of English v.0.48:

Whitleather \Whit"leath`er\, n. [White + leather.]
   [1913 Webster]
   1. Leather dressed or tawed with alum, salt, etc., remarkable
      for its pliability and toughness; white leather.
      [1913 Webster]

   2. (Anat.) The paxwax. See Paxwax.
      [1913 Webster]