The Collaborative International Dictionary of English v.0.48:

Sewe \Sewe\, v. i.
   To perform the duties of a sewer. See 3d Sewer. [Obs.]
   [1913 Webster]

Bouvier's Law Dictionary, Revised 6th Ed (1856):

SEWER. Properly a trench artificially made for the purpose of carrying water
into the sea, river, or some other place of reception. Public sewers are, in
general, made at the public expense. Crabb, R. P. Sec. 113.