vent pipe

American  

noun

Plumbing.

1. a pipe above a waste pipe or soil pipe that allows gas to escape from the system.

---

Etymology

Origin of vent pipe

First recorded in 1855–60

Example Sentences

The vent pipe in your roof allows the air to enter the system to replace the air being pushed through the pipes by the drain water.

From Seattle Times • Feb. 13, 2023

Flash these pipes as you would any plumbing vent pipe.

From Seattle Times • Jul. 30, 2021

That vent pipe on your roof is doing the same thing as the hole you cut into the water bottle.

From Seattle Times • Mar. 22, 2021

That something might be a chimney, a plumbing vent pipe, a powered attic fan, a turbine vent or a dormer, or it might be where two roof surfaces intersect.

From Washington Post • Jan. 8, 2019

He’d built the frame from long beams, the roof and walls from decking, the chimney from a vent pipe off a lost steamer, one window from a porthole.

From "Beyond the Bright Sea" by Lauren Wolk