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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.

Spirit Airlines was sometimes nicknamed the Greyhound of the sky.

From The Wall Street Journal • Jun. 22, 2026

The U.S. could soon have the “universally detested Temu Greyhound of the Skies.”

From Salon • Apr. 28, 2026

Gil bought William a Greyhound ticket and got him on the bus home.

From Slate • Mar. 25, 2026

Greyhound racing is to be banned in Wales, after Senedd members voted to outlaw the practice.

From BBC • Mar. 17, 2026

What she had was their clothes, the Greyhound tickets, and $1,600 in cash.

From "Nickel and Dimed: On (Not) Getting By in America" by Barbara Ehrenreich

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