Of an animal: of mixed or inferior breed; spec. (of a dog) mongrel. Obsolete.

Of an animal: of mixed breed; born of parents of superior and inferior strain; mongrel. Also fig.

Chiefly U.S. Of livestock: of inferior breed or physique.

Bred from parents of different species or varieties; hybrid, mongrel. (Also absol. as n.) Also, (designating) wool from cross-bred sheep.

Of animals: not pure bred; of inferior strain.