Sentence:  In a stream that turns a mill-wheel there is a lot of <WSD>water</WSD> ; the mill-pond is quiet , its surface dark and shadowed , and there does not seem to be much water in it . 
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