water seal

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

Words nearby water seal

Following the hot-water canner in simplicity of construction and manipulation is the water-seal cooker.

Every Step in Canning |Grace Viall Gray
The flanges of the cover were sufficiently long to dip into a water-seal surrounding the tank.

The Preparation of Plantation Rubber |Sidney Morgan
To make a trap with what is known as a water-seal, the U pipe is turned into an S fallen forward, .

The Library of Work and Play: Housekeeping |Elizabeth Hale Gilman
It bubbles through the water in the washer, which therefore also serves as a water-seal, and passes thence to the gasholder.

Acetylene, The Principles Of Its Generation And Use |F. H. Leeds

These ash-pits are themselves provided with an overflow consisting of a siphon-tube forming a water-seal.

Gas-Engines and Producer-Gas Plants |R. E. Mathot