What does "sewer" mean?

Sewer: (Zoöl.) A small tortricid moth whose larva sews together the edges of a leaf by means of silk; as, the apple-leaf sewer (Phoxopteris nubeculana)

Additional senses

  1. 2.A drain or passage to carry off water and filth under ground; a subterraneous channel, particularly in cities.
  2. 3.Formerly, an upper servant, or household officer, who set on and removed the dishes at a feast, and who also brought water for the hands of the guests. Then the sewer Poured water from a great and golden ewer, That from their hands to a silver caldron ran. Chapman.

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