U-bend

British  

noun

1. a U-shaped bend in a pipe or drain that traps water in the lower part of the U and prevents the escape of noxious fumes or vapours; trap

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Example Sentences

While we've moved on alphabetically from the S-bend to the U-bend, flushing toilets still deploy the same insight.

From BBC • Oct. 15, 2017

The real reason, most probably, was to distance himself from the poison, which he had efficiently tipped down the bathroom U-bend.

From The Guardian • Mar. 6, 2016

It has its own jargon, and while you may not know the exact difference between a J-bend and a U-bend pipe, you can roughly figure out what they mean.

From Forbes • Oct. 27, 2014

"A gully like this has a U-bend on it similar to a toilet and this line indicates the direct of the exit pipe from the gully."

From BBC • Apr. 4, 2014

U-bend around those of the floor and wall slabs, and penetrating the latter only from 8 to 12 in.

From Some Mooted Questions in Reinforced Concrete Design American Society of Civil Engineers, Transactions, Paper No. 1169, Volume LXX, Dec. 1910 by Godfrey, Edward