| Noun | 1. | sewer - a waste pipe that carries away sewage or surface water | |
| 2. | sewer - someone who sews; "a sewer of fine gowns"baster, tacker - a sewer who fastens a garment with long loose stitches needleworker - someone who does work (as sewing or embroidery) with a needle | |
| 3. | sewer - misfortune resulting in lost effort or money; "his career was in the gutter"; "all that work went down the sewer"; "pensions are in the toilet" | |