waste pipe

a pipe for draining liquid waste or excess liquids.

Plumbing. a pipe for draining away the wastes of a building other than those from water closets.

Compare soil pipe.

Origin of waste pipe

First recorded in 1505–15

The gas thus passes through the body of coke in the opposite direction to the wash water, which then flows to the waste-pipe.

Gas-Engines and Producer-Gas Plants |R. E. Mathot
The bean was trying feebly to climb a string to the waste-pipe that crossed the “garden” and burrowed in it.

Neighbors |Jacob A. Riis
Do not let the steam all go roaring out of the waste-pipe in however sacred and blessed emotions.

Expositions of Holy Scripture |Alexander Maclaren
The sizes used and the methods employed to vent the waste-pipe systems are the same as in cast-iron work.

Elements of Plumbing |Samuel Dibble

Traps will not be permitted on main, vertical, soil or waste-pipe lines.

Elements of Plumbing |Samuel Dibble

waste pipe

a pipe to take excess or used water away, as from a sink to a drain