1.NounA pipe or channel, or system of pipes or channels, used to remove human waste and to provide drainage.
"There was a blockage in the sewer after an item of clothing was flushed down the toilet."
2.VerbTo provide (a place) with a system of sewers.
3.NounAn official in charge of a princely household, also responsible for the ceremonial task of attending at dinners, seating the guests and serving dishes.
4.NounOne who sews.
5.NounA small tortricid moth, the larva of which sews together the edges of a leaf using silk.