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

But if you’re intimidated by the strong stuff, these tumblers also make great water glasses. — Mina Dragani, Architectural Digest, 14 Aug. 2026

In her debut role, Kiami Davael played Lavender, Matilda’s first real friend who pranks Miss Trunchbull with a frog in her water glass. — Huntley Woods, Entertainment Weekly, 3 Aug. 2026

The service was impeccable—our water glasses were always full and the timing of our courses was excellent. — Tara Massouleh McCay, Southern Living, 3 July 2026

Some hosts are particularly good at assigning tasks, like passing appetizers, filling water glasses, or lighting candles, while others prefer handling everything themselves. — Jamie Cuccinelli, Martha Stewart, 3 June 2026

Word History

First Known Use

1590, in the meaning defined at sense 1

Rhymes for water glass

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

Kids Definition

water glass

noun

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