To utter a loud, prolonged, and mournful cry, as that of a dog or wolf.To give out a loud wailing sound, as the wind: as, the storm howls.To wail; lament; make a loud mournful outcry.To utter in a loud wailing tone.n. The cry of a dog or wolf, or any sound resembling that cry.n. A cry of anguish or distress; a loud wail.Of an organ-pipe, same as cipher, v., 4.