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Noun: water glass  wo-tu(r) glãs
  1. A glass for drinking water
    "She filled the water glass from the pitcher"
     
  2. A viscous glass consisting of sodium silicate in solution; used as a cement or as a protective coating and to preserve eggs
    "water glass was applied to the concrete surface to increase its durability";
    - soluble glass, sodium silicate
     
  3. Gauge for indicating the level of water in e.g. a tank, boiler or reservoir
    "The engineer monitored the water glass to ensure the boiler was operating safely";
    - water gauge, water gage [US], water-gauge
     
  4. Clock that measures time by the escape of water
    "Ancient civilizations used water glasses to track time";
    - water clock, clepsydra

Derived forms: water glasses

Type of: clock, drinking glass, gage [N. Amer, rare], gauge, glass

Encyclopedia: Water glass