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water seal

British  

noun

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

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

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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

The edges of the lid dip into an external water seal or lute G, whereby the gas is prevented from escaping.

From Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 4 "G" to "Gaskell, Elizabeth" by Various

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