Source : Webster's Revised Unabridged Dictionary (1913)

Teeswater \Tees"wa`ter\, n. [From the river Tees, northern
   England.]
   1. A breed of cattle formerly bred in England, but supposed
      to have originated in Holland and to have been the
      principal stock from which the shorthorns were derived.

   2. An old English breed of sheep allied to the Leicester.