white rat

American  

noun

1. an albino variety of the Norway rat, Rattus norvegicus, used in biological experiments.

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white rat British  

noun

1. a white variety of the brown rat ( Rattus norvegicus ), used extensively in scientific research

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Example Sentences

“America is like a white rat with red eyes.”

From Washington Post • Jan. 27, 2023

"When I was a youngster, somebody gave me a white rat as a pet," Baker said.

From Fox News • Mar. 8, 2022

Without it, it’s hard to imagine how he ever would’ve climbed on that giant white rat, which here we are still talking about nearly half a century later.

From Los Angeles Times • Sep. 6, 2018

And, of course, she had her animals for company: a Javanese monkey who got into all sorts of trouble, multiple dogs and a white rat.

From New York Times • Oct. 2, 2017

A white rat became the coachman, and six lizards were transformed into footmen.

From "Ella Enchanted" by Gail Carson Levine