Etymology From Old English grīġhund, from a cognate or borrowing of Old Norse grøy (“bitch”) (whence Icelandic grey, thus not related to the colour grey) plus hund (“hound”). Altered by folk etymology to appear to be grey + hound.
1
A lean breed of dog used in hunting and racing.
Her young heart was full of love; and a world of kindly feelings were wasted on her delicate greyhound, her bright winged birds, and her favourite flowers.1834, L[etitia] E[lizabeth] L[andon], chapter XII, in Francesca Carrara. […], volume II, London: Richard Bentley, […], (successor to Henry Colburn), →OCLC, page 127:
2
A highball cocktail of vodka and grapefruit juice.
3
Dated A swift steamer, especially an ocean steamer.
Etymology From Old English grīġhund, from a cognate or borrowing of Old Norse grøy (“bitch”) (whence Icelandic grey, thus not related to the colour grey) plus hund (“hound”). Altered by folk etymology to appear to be grey + hound.
1
Of fish To leap rapidly across the surface of the water.
Greyhound
noun
1
A bus run by Greyhound Lines.
I'm just taking a Greyhound on the Hudson River line / Because I'm in a New York state of mind1976, Billy Joel, “New York State of Mind”, in Turnstiles: