What is the meaning of Sewer?

A pipe or system of pipes used to remove human waste and to provide drainage.

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

A servant attending at a meal who is responsible for seating arrangements, serving dishes, etc.

One who sews.

A small tortricid moth, the larva of which sews together the edges of a leaf using silk.

Alternative form of suren

Source: wiktionary.org