sewer

Short definition from Wiktionary

Noun

1. 1
   A pipe or channel, or system of pipes or channels, used to remove human waste and to provide drainage.
2. 2
   An official in charge of a princely household, also responsible for the ceremonial task of attending at dinners, seating the guests and serving dishes.
3. 3
   One who sews.
4. 4
   A small tortricid moth, the larva of which sews together the edges of a leaf using silk.

Verb

1. 1
   To provide (a place) with a system of sewers.