From Longman Dictionary of Contemporary Englishwolfwolf1 /wʊlf/ ●●○ noun (plural wolves /wʊlvz/) [countable] 1 
HBAa wild animal that looks like a large dog and lives and hunts in groups a pack of wolves2 → a wolf in sheep’s clothing3 → keep the wolf from the door —wolfish adjective a wolfish grin → cry wolf at cry1(7), → lone wolf at lone(3)
HBAa wild animal that looks like a large dog and lives and hunts in groups a pack of wolves2 → a wolf in sheep’s clothing3 → keep the wolf from the door —wolfish adjective a wolfish grin → cry wolf at cry1(7), → lone wolf at lone(3)Examples from the Corpus
wolf• a pack of wolves• A wild cat passes near, somebody spots a yak, there is talk of a new plague of wolves.• They were shown to a small table in the corner, next to a life-sized plaster wolf.• The wolf: A wicked, clever, hungry, talking wolf.• So the wolf tried to climb down through the chimney.• And, of course, there were the wolves.• The wolf was so full, in fact, that he could not fit out through the exit again.• The wolves clustered around the base of the tree looked up with interest at their next meal talking to himself.pack of wolves• Puppies will herd hens in a farmyard, just as a pack of wolves will encircle an ailing prey.• The genes in a pack of wolves don't all stand to gain from the same set of events in the future.• A pack of wolves is not.• Men prowled the motel like packs of wolves searching out easy prey.• It is not true of the pack of wolves.wolfwolf2 (also wolf down) verb [transitive] informalEAT to eat something very quickly, swallowing it in big pieces SYN gobble→ See Verb tableExamples from the Corpus
wolf• Jim changed quickly, took out some clothes for the next morning, then wolfed down his dinner.• And it was wolfed down like fast food, digested with a raucous burp.• I wolfed down my lunch, charming a second helping out of the all-smiles stewardess.• Gao Ma wolfed down ome leftover rice and walked out on to the sandbar behind his house, till feeling empty inside.• Nathan returned his attention to his notes and began to eat, wolfing down the food.• She and Miguel wolfed down three pieces.• But the school dinner she was wolfing down was nothing like the standard favourite of baked beans, burgers and ice-cream.• Liberated, Ethel frisked with a Jack Russell in a red, spotted scarf and wolfed up a half-eaten beefburger bun.Origin wolf1 Old English wulf 