covert hound

noun1

1. •
   a staghound or buckhound, a dog for coursing deer, particularly the Welsh gellgi breed ancestral to the Welsh Sheepdog and Australian Shepherd

   • In the Welsh laws of Howel Dda (who died 948), the King's buckhound or covert-hound is valued at a pound. — William Drury, British Dogs, Their Points, Selection, and Show Preparation (1903)