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brown rat

American  

noun

  1. Norway rat.


brown rat British  

noun

  1. Also called: Norway rat.  a common brownish rat, Rattus norvegicus : a serious pest in all parts of the world

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of brown rat

First recorded in 1820–30

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

But has the city’s vilest enemy, better known as the common brown rat, finally met its match?

From Washington Times • Apr. 12, 2023

The primary species of rat in both New York and Los Angeles is Rattus norvegicus, the brown rat: a midsize rodent that has a whiplike tail and is resilient, intuitive and remarkably fecund.

From New York Times • Feb. 27, 2023

"But it was our little brown rat and it was our responsibility to make sure it persisted. And we failed."

From BBC • Feb. 19, 2019

The culprit — known as the Norway rat or brown rat — can grow to 15 inches long, not including tail, and weigh over a pound.

From Seattle Times • Aug. 23, 2016

Out of nowhere, a scrawny brown rat materialized on the side bench, nervous and breathless.

From "Life of Pi" by Yann Martel

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