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greyhound

American  
[grey-hound] / ˈgreɪˌhaʊnd /
Or grayhound

noun

greyhounds plural
  1. one of a breed of tall, slender, short-haired dogs, noted for its keen sight and swiftness.

  2. a swift ship, especially a fast ocean liner.


greyhound British  
/ ˈɡreɪˌhaʊnd /

noun

  1. a tall slender fast-moving dog of an ancient breed originally used for coursing

"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

Other Word Forms

Noun Inflected Forms

Etymology

Origin of greyhound

before 1000; Middle English greihund, grehund, grihund, Old English grīghund < Old Norse greyhundr; compare Old Norse grey bitch; see hound 1

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Explanation

A greyhound is a long-legged, elegant dog that's known for its speed. Historians believe greyhounds are one of the oldest dog breeds. Dogs resembling greyhounds decorate many ancient Egyptian tombs and Neolithic settlement walls, suggesting that this sleek, muscular dog has been around for thousands of years. In the 20th century, greyhounds were commonly bred for racing — they can run steadily at speeds over 40 miles per hour. Retired racing greyhounds also make sweet companions, and as the sport has declined in the U.S., more and more greyhounds have lived their whole lives as coddled pets. Interestingly, the grey part of the word is of disputed origin, but it does not refer to the dogs' color — as most greyhounds are not gray.

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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.

The politician secured a greyhound racing ban, more money for childcare and discount bus travel in 2025's round of budget talks.

From BBC • Apr. 14, 2026

Now, there are thought to be fewer than 30 greyhound racers left in in the country.

From BBC • Mar. 18, 2026

The species of crocodylomorph roamed Earth about 215 million years ago during the Triassic period and is believed to have been a fast-moving, land-dwelling predator resembling a "reptilian greyhound".

From BBC • Feb. 17, 2026

In West Memphis: In legal thriller “The Firm,” characters played by Tom Cruise and Ed Harris meet at a greyhound track, now called Southland Casino Racing.

From The Wall Street Journal • Feb. 16, 2026

The greyhound sat straight up and stared at him.

From "The Inquisitor's Tale" by Adam Gidwitz

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