Answer: BRAZOS

AnswerCrossword Clue
BRAZOSGulf of Mexico feeder
BRAZOSTexas county that's Spanish for "arms"
BRAZOSWaco's river
BRAZOSWaco's river.
BRAZOSTex. river
BRAZOSTexas river
BRAZOSRiver to the Gulf of Mexico
BRAZOSLongest river in Texas