| sewer | 1. One who sews, or stitches. 2. <zoology> A small tortricid moth whose larva sews together the edges of a leaf by means of silk; as, the apple-leaf sewer (Phoxopteris nubeculana) Source: Websters Dictionary (01 Mar 1998) |
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| sewer gas | Gas, probably mostly methane, resulting from decomposition of organic matter in sewers; potentially explosive and toxic. (05 Mar 2000) |