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

There is no way the water companies delivering that can now get around the U-bend and go backwards.

From BBC

However, if an office is left empty with the central heating on, the water in a U-bend can evaporate and it might be worth risking the vertical migration from cold sewer to warm corporate setting.

From The Guardian

"Today Trump thugs stormed the building unchallenged, directly from a rally where he deliberately stoked their violence with lies. May he be flushed round the U-bend of history forever."

From Fox News

Her father was a handyman, founder and sole proprietor of Wright’s Repair, one day working at the church repairing the eaves where a board had broken and a family of squirrels had wriggled their way into the nave, another day at a neighbor’s house snaking the drains or replacing a U-bend under the sink that had rusted away.

From Literature

The Fine to Flush tests, set out in a 30 page document, scrutinise whether the wipes are able to clear the u-bend, avoid snagging and avoid chemical residues.

From BBC