Quick definitions from WordNet (howl)
▸ noun: a long loud emotional utterance ("He gave a howl of pain")
▸ noun: a loud sustained noise resembling the cry of a hound ("The howl of the wind made him restless")
▸ noun: the long plaintive cry of a hound or a wolf
▸ verb: emit long loud cries ("Howl with sorrow")
▸ verb: cry loudly, as of animals ("The coyotes were howling in the desert")
▸ verb: laugh unrestrainedly and heartily
▸ verb: make a loud noise, as of wind, water, or vehicles ("The wind was howling in the trees")
▸ Also see howl
▸ noun: a long loud emotional utterance ("He gave a howl of pain")
▸ noun: a loud sustained noise resembling the cry of a hound ("The howl of the wind made him restless")
▸ noun: the long plaintive cry of a hound or a wolf
▸ verb: emit long loud cries ("Howl with sorrow")
▸ verb: cry loudly, as of animals ("The coyotes were howling in the desert")
▸ verb: laugh unrestrainedly and heartily
▸ verb: make a loud noise, as of wind, water, or vehicles ("The wind was howling in the trees")
▸ Also see howl