whaul

From The Collaborative International Dictionary of English v.0.48:

Whall \Whall\, n. [See Wall-eye.]
   A light color of the iris in horses; wall-eye. [Written also
   whaul.]
   [1913 Webster]
.

From The Collaborative International Dictionary of English v.0.48:

Whaul \Whaul\ (hw[add]l), n.
   Same as Whall.
   [1913 Webster]