noun (n)

• an oil reservoir in an internal combustion engine(noun.artifact)

  source: wordnet30
• a well or other hole in which water has collected(noun.artifact)

  source: wordnet30
• a covered cistern; waste water and sewage flow into it(noun.artifact)

  Synonym:
  cesspit, cesspool, sink
  

  source: wordnet30
• A round pit of stone, lined with clay, for receiving the metal on its first fusion.(noun)

  source: webster1913