a wild carnivorous mammal which is the largest member of the dog family, living and hunting in packs. It is native to both Eurasia and North America, but is much persecuted and has been widely exterminated

used figuratively to refer to a rapacious, ferocious, or voracious person or thing

he calls the media ravening wolves

a harsh or out-of-tune effect produced when playing particular notes or intervals on a musical instrument, caused either by the instrument's construction or by divergence from equal temperament