The greyhound was much used for hunting, esp. hares; they hunted by sight not scent. In 1389 an ordinance decreed that no priest nor clerk was permitted to own a greyhound or other hunting dog, if his income was less than £10 a year. The Latin is leporarius. They were also known as canes currentes = running dogs. [< OldEngl. grighund = greyhound] -
Dictionary of Medieval Terms and Phrases. Christopher Coredon with Ann Williams.