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]