Sentence:  Through the splash of the rising <WSD>waters</WSD> , they could hear the roar of the river as it raged through its canyon , gnashing big chunks out of the banks . 
Meaning of the word marked with <WSD> tags:  binary compound that occurs at room temperature as a clear colorless odorless tasteless liquid; freezes into ice below 0 degrees centigrade and boils above 100 degrees centigrade; widely used as a solvent