From Middle English *deerhound, *deerehund, from Old English *dēorhund (attested in hēahdēorhund (“stag-hound, deer-hound, a dog for hunting great game”)), equivalent to deer + hound.
From
Wiktionary
Deerhound Sentence Examples
The Scotch deerhound is a larger and heavier variety of the English greyhound, with rough and shaggy hair.
The Irish wolfhound is now extinct, but appears to have been a powerful race heavier than the deerhound but similar to it in general characters.
Two of the purest breeds at the present day are the Scottish deerhound and the Dalmatian (spotted carriage-dog), A deerhound after having seven pups to a Dalmatian was put to a dog of her own breed.
A similar result was obtained with a deerhound first mated with a retriever.
According to their breed standards, the tallest breeds are the Irish Wolfhound and the Scottish Deerhound.