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brown rat

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Norway rat

–noun
an Old World rat, Rattus norvegicus, having a grayish-brown body with whitish underparts and a long, scaly tail, now common in the U.S. in or near homes, barns, wharves, etc.
Also called brown rat.


Origin:
1745–55
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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brown rat  
n.  See Norway rat.
Norway rat  
n.  The common domestic rat (Rattus norvegicus), which is highly destructive and found worldwide, especially in populated areas. Also called brown rat.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Medical Dictionary

Main Entry: brown rat
Function: noun
: a common domestic rat of the genus Rattus (R. norvegicus) that has been introduced worldwide called also Norwayrat

Main Entry: Nor·way rat
Pronunciation: "no(&)r-wA-
Function: noun
: BROWNRAT
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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