water seal

British  

noun

1. a small amount of water contained in the trap of a drain to prevent the passage of foul smells

---

Example Sentences

See Examples For:

water seal

Their multi-scale suction mechanism is an organic combination of mechanical conformation and regulated water seal.

From Science Daily ● Apr. 18, 2024

Before you turn the water on or flush a toilet, the drain pipes, beyond the water seal in your P-traps, are filled with air.

From Seattle Times ● Feb. 13, 2023

When it’s time to eat, they pour in the boiling water, seal the bag, then tuck it into a coat or a beanie to keep things hot.

From New York Times ● Jun. 26, 2017

This fermentation jar from Bay Area ceramist Sarah Kersten is lined with a food-safe glaze and has a "water seal," which eliminates evaporation and odors.

From Los Angeles Times ● Nov. 27, 2015

There is a water seal on the water supply-pipe from the tank to the generators, which would be forced should the pressure within the generators for any reason become excessive.

From Acetylene, the Principles of Its Generation and Use A Practical Handbook on the Production, Purification, and Subsequent Treatment of Acetylene for the Development of Light, Heat, and Power by F. H. (Frank Henley) Leeds