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rat snake

American  

noun

  1. any of several New and Old World colubrid snakes, of the genus Elaphe, that feed chiefly on small mammals and birds.


rat snake British  

noun

  1. any of various nonvenomous rodent-eating colubrid snakes, such as Elaphe obsoleta of North America and Ptyas mucosus of Asia

"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 rat snake

First recorded in 1855–60

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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.

A TikTok of “The Traitors” and “Love Island” cast member Rob Rausch handling a rat snake.

From The Wall Street Journal • Mar. 5, 2026

The reptile, believed to be a non-venomous rat snake, was ushered off the grounds before the game between Galle Titans and Dambulla Aura resumed.

From BBC • Aug. 1, 2023

“The dearest baby gray rat snake was crossing our driveway the other day just as the dog and I were leaving for a walk.”

From New York Times • Jul. 15, 2023

Having chickens “couldn't be a more down-home, country, just warm feeling, so domestic and wonderful until you open the doors and there's a five-foot rat snake with an egg down it,” she says.

From Scientific American • Sep. 18, 2022

Papa had been talking about that place ever since George had brought the two-foot rat snake to school to show Mr. Landers—because they were studying reptiles!

From "I Survived the Sinking of the Titanic, 1912" by Lauren Tarshis

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