brown rat
noun
Definition of brown rat
: a common domestic rat (Rattus norvegicus) that has been introduced worldwide —called also Norway rat
From the M-W Editors
First Known Use of brown rat
1737
Medical Dictionary
brown rat
noun
Medical Definition of brown rat
: a common domestic rat of the genus Rattus (R. norvegicus) that has been introduced worldwide—called also Norway rat
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See words that rhyme with brown rat Britannica.com: Encyclopedia article about brown rat
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