water seal

noun

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

Example Sentences

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

Read more on Science Daily

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.

Read more on Seattle Times

One said: “Don’t take it out of the water. Seal the area, turn it into a tourist attraction and open it up to the world.”

Read more on The Guardian

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.

Read more on New York Times

There are traditional donabe for soups and stews, a grill version and even a stovetop smoker with a water seal to keep the smoke from invading your kitchen.

Read more on Los Angeles Times