What is the meaning of Sewer?

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

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

An official in charge of a princely household, also responsible for the ceremonial task of attending at dinners, seating the guests and serving dishes.

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