- a viscous glass consisting of sodium silicate in solution; used as a cement or as a protective coating and to preserve eggs
同义词：soluble glass, sodium silicate
- a glass for drinking water
- gauge for indicating the level of water in e.g. a tank or boiler or reservoir
同义词：water gauge, water gage
- clock that measures time by the escape of water
同义词：water clock, clepsydra
