lurcher

Concise Oxford English Dictionary © 2008 Oxford University Press:
lurcher/ˈlɜːtʃə(r)/

▶noun

• 1 Brit. a cross-bred dog, typically a retriever, collie, or sheepdog crossed with a greyhound, originally used for hunting and by poachers.

• 2 archaic a prowler, swindler, or petty thief.

– origin C16: from obs. lurch, var. of lurk.