brown rat

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Related to brown rats: sewer rats

brown rat

n.
The common domestic rat (Rattus norvegicus), which is found worldwide and is a destructive pest of crops and stored food and a carrier of disease. Also called Norway rat.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

brown rat

n
(Animals) a common brownish rat, Rattus norvegicus: a serious pest in all parts of the world. Also called: Norway rat
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

Nor′way rat′


n.
an Old World rat, Rattus norvegicus, having a grayish brown body and a long, scaly tail: introduced worldwide. Also called brown rat.
[1745–55]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.brown rat - common domestic ratbrown rat - common domestic rat; serious pest worldwide
rat - any of various long-tailed rodents similar to but larger than a mouse
genus Rattus, Rattus - common house rats; upper incisors have a beveled edge
wharf rat - brown rat that infests wharves
sewer rat - brown rat commonly found in sewers
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
Otters, herons, marsh harriers and even brown rats are among the many other predators that keep water voles constantly on their toes.
A study found 19 per cent of brown rats collected in northern England and Wales were positive for SEOV.
SEOV was detected in wild brown rats in the Netherlands in 2013, but no human cases had been reported.
Historically Rattus species (both black and brown rats) have been implicated in the emergence and spread of infectious diseases of human health importance such as plague, murine typhus, scrub typhus, leptospirosis and hemorrhagic fever.
That house was plagued by brown rats; two of which got trapped in a water tank in the kitchen, so that they could not swim out of the water, and leap to safety.
Brown rats, which eat the eggs and the chicks of birds, are the problem.
[...] We inject a group of animals--dogs, cats--what about Brown rats?--with a virus, something highly infectious, deadly to rats--our bio-chemists could easily come up with one--set them loose at certain points that Mr.
Now the UK population of brown rats is peaking at 15 million and rising."