water glass

Or water·glass

noun

1. a drinking glass; tumbler.

2. a glass container for holding water, as for growing bulbs, plants, or the like.

3. a glass tube used to indicate water level, as in a boiler.

4. a device for observing objects beneath the surface of the water, consisting essentially of an open tube or box with a glass bottom.

5. sodium silicate.

water glass

noun

1. a viscous syrupy solution of sodium silicate in water: used as a protective coating for cement and a preservative, esp for eggs

2. another name for water clock water gauge

Word History and Origins

Origin of water glass¹

First recorded in 1600–10