sew·er 1 
(sər)
(sər)n.
An artificial, usually underground conduit for carrying off sewage or rainwater.
[Middle English, from Anglo-Norman sewere, from Vulgar Latin *exaquāria : Latin ex-, ex- + Latin aquāria, feminine of aquārius, pertaining to water (from aqua, water; see akw-ā- in the Appendix of Indo-European roots).]
- carbohydrase
- carbohydrate
- carbohydrate loading
- carbolated
- carbolic acid
- carbo-load
- car bomb
- carbon
- carbon-12
- carbon-14
- carbon-14 dating
- carbonaceous
- carbonado
- carbonado
- carbonara
- carbonate
- carbonated water
- carbonation
- carbonator
- carbon black
- carbon copy
- carbon cycle
- carbon-date
- carbon dating
- carbon dioxide