Noun rattus has 1 sense
  1. Rattus, genus Rattus - common house rats; upper incisors have a beveled edge
    --1 is a kind of mammal genus
    --1 is a member of Muridae, family Muridae
    --1 has members:
     brown rat, Norway rat, Rattus norvegicus; black rat, roof rat, Rattus rattus
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