English to English

noun (n)

• a covered cistern; waste water and sewage flow into it(noun.artifact)

  Synonym:
  cesspit, sink, sump
  

  source: wordnet30
• A cistern in the course, or the termination, of a drain, to collect sedimentary or superfluous matter; a privy vault; any receptacle of filth.(noun)

  source: webster1913