water glass

American  

Or waterglass

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.

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water glass British  

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

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Etymology

Origin of water glass

First recorded in 1600–10

Example Sentences

On his way, he spots a stray napkin and a water glass out of place.

From Los Angeles Times • Mar. 19, 2025

No water glass needed, in other words, because the door has disappeared.

From Science Daily • Mar. 4, 2024

The water glass is highlighted in a circle that has been edited into the footage.

From Seattle Times • Jun. 23, 2023

Arrange the potatoes on the prepared sheet and, using the bottom of a water glass so you don’t touch the hot potatoes with your hands, flatten the potatoes.

From Washington Post • Jul. 19, 2022

He’s a real pro, the kind of waiter who refills your water glass when it’s half empty, without you noticing he’s doing it.

From "Every Day" by David Levithan