The Collaborative International Dictionary of English v.0.48:

White-face \White"-face`\, n.
   A white mark in the forehead of a horse, descending almost to
   the nose; -- called also white-blaze.
   [1913 Webster]

U.S. Gazetteer Places (2000):

Whiteface, TX -- U.S. town in Texas
   Population (2000):    465
   Housing Units (2000): 207
   Land area (2000):     0.581382 sq. miles (1.505772 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    0.581382 sq. miles (1.505772 sq. km)
   FIPS code:            78328
   Located within:       Texas (TX), FIPS 48
   Location:             33.600875 N, 102.615414 W
   ZIP Codes (1990):     79379
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Whiteface, TX
    Whiteface