The Collaborative International Dictionary of English v.0.48:

Brazos \Brazos\ prop. n.
   a North American river, flowing into the Gulf of Mexico.

   Syn: Brazos River.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

Brazos
    n 1: a river that rises in Mexico and flows across Texas into
         the Gulf of Mexico [syn: Brazos, Brazos River]

U.S. Gazetteer Counties (2000):

Brazos -- U.S. County in Texas
   Population (2000):    152415
   Housing Units (2000): 59023
   Land area (2000):     585.779853 sq. miles (1517.162791 sq. km)
   Water area (2000):    4.513500 sq. miles (11.689911 sq. km)
   Total area (2000):    590.293353 sq. miles (1528.852702 sq. km)
   Located within:       Texas (TX), FIPS 48
   Location:             30.634948 N, 96.341985 W
   Headwords:
    Brazos
    Brazos, TX
    Brazos County
    Brazos County, TX