Sewer rat

noun

Definitions

Noun
  1. 1
    The brown rat (Rattus norvegicus).

    "The black rat [...] became extinct in Britain following the Roman withdrawal, only to reappear in Norman times. Thereafter the black rat prospered - until the arrival of the larger brown rat (also known as the sewer rat or Norway rat), which reached Britain at about the time of the Hanoverian succession in the eighteenth century."

  2. 2
    brown rat commonly found in sewers wordnet
  3. 3
    A contemptible person. derogatory
  4. 4
    Used other than figuratively or idiomatically: Any rat that lives in sewers.

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