Sentence:  The <WSD>waters</WSD> lay muddy but placid , without a ripple of movement against the wheels ; there was not a match width of damp mark to show they were receding . 
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