sewer: a person or thing that sews. 1350-1400; Middle English; see sew pronounced soh-er, not soo-er as in sewer: an artificial conduit, usually underground,

sewer: a person or thing that sews. 1350-1400; Middle English; see sew pronounced soh-er, not soo-er as in sewer: an artificial conduit, usually underground, for carrying off waste water and refuse, as in a town or city. 1375-1425; late Middle English suer (e) < dialectal Old French se (u) wiere overflow channel http://www.dictionary.com/browse/sewer http://www.dictionary.com/browse/sewer