Definition of sewer noun from the Oxford Advanced Learner's Dictionary



BrE BrE//ˈsuːə(r)//
, also BrE//ˈsjuːə(r)//
; NAmE NAmE//ˈsuːər//
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an underground pipe that is used to carry sewage away from houses, factories, etc. a sewer pipe/system an open sewer (= a channel on the surface of the ground that is used to carry sewage) Word OriginMiddle English (denoting a watercourse to drain marshy land): from Old Northern French seuwiere ‘channel to drain the overflow from a fish pond’, based on Latin ex- ‘out of’ + aqua ‘water’.Extra examples Much of the water runs away down the sewers. A network of sewer tunnels runs underneath the prison. Drainage in the village was very poor, with open sewers and gutters. New sewers were commissioned as the city became more affluent.
See the Oxford Advanced American Dictionary entry: sewer

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