The story
- Old English · inherited from*dēorhund
- Middle English · inherited from*deerhound
- English todaydeerhound
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.
Etymology from Wiktionary, CC BY-SA 4.0.