water glass

noun

1

: a glass vessel (such as a drinking glass) for holding water

2

: an instrument consisting of an open box or tube with a glass bottom used for examining objects in or under water

3

: a substance that consists usually of the silicate of sodium, is found in commerce as a glassy mass, a stony powder, or dissolved in water as a viscous syrupy liquid, and is used especially as a cement, a protective coating, and as a fireproofing agent

Examples of water glass in a Sentence

Recent Examples on the Web

Another photo shows the two posing in front of a water glass that’s been turned into an impromptu ashtray. —David Matthews, Mercury News, 12 Jan. 2026

The service was impeccable—our water glasses were always full and the timing of our courses was excellent. —Tara Massouleh McCay, Southern Living, 11 Jan. 2026

Instead, take a loop around your office, or visit the kitchen to refill your water glass. —Currie Engel, Health, 4 Jan. 2026

Sheinbaum is all for leaving the water glasses in the cabinet and reaching for something a little more special. —Andrea Strong, Bon Appetit Magazine, 30 Dec. 2025

Word History

First Known Use

1590, in the meaning defined at sense 1

Rhymes for water glass

• candlemas
• fiberglass
• fibreglass
• hourglass
• isinglass
• lemongrass
• martinmas
• orchardgrass
• overpass
• plexiglas
• plexiglass
• sassafras

Kids Definition

water glass

noun

: a glass container (as a drinking glass) for holding water