sewer

Từ điển Oxford Advanced Learner 8th

sewer [sewer sewers] BrE [ˈsuːə(r)] BrE [ˈsjuːə(r)] NAmE [ˈsuːər] noun
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 Origin:
Middle 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’.

Example Bank:
•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.

• Từ đồng nghĩa / Synonyms:
  gutter, toilet, sewerage, cloaca