drain trap

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Related to drain trap: Plumbing trap


1. A device to maintain a water seal against sewer gases, air, and odors; also called a stench trap.
2. A removable section of a theater stage floor.
3. Same as traprock.
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References in periodicals archive ?
As a preventive measure, residents can pour one gallon of water down basement floor drains or unused plumbing fixtures to ensure that the drain trap will be effective at stopping smoke or sewer gases from entering their home.
The commissioners advise residents to pour water down any unused plumbing fixture to make sure the drain trap is working.