any of several large carnivorous mammals of the genus Canis, of the dog family Canidae, especially C. lupus, usually hunting in packs, formerly common throughout the Northern Hemisphere but now chiefly restricted to the more unpopulated parts of its range.
the fur of such an animal.
any of various wolflike animals of different families, as the thylacine.
(initial capital letter) Astronomy. the constellation Lupus.
the larva of any of various small insects infesting granaries.