The Collaborative International Dictionary
Gnarl \Gnarl\, v. i. [imp. & p. p. Gnarled; p. pr. & vb. n. Gnarling.] [From older gnar, prob. of imitative origin; cf. G. knarren, knurren. D. knorren, Sw. knorra, Dan. knurre.] To growl; to snarl.
And wolves are gnarling who shall gnaw thee first.
--Shak.
Wiktionary
vb. (present participle of gnarl English)
Usage examples of "gnarling".
Large, hoary old trees, black cypress and dark swamp willow, twisted up out of the muck, looming, barring the morning light, their warped roots gnarling down out of sight into the slime-laden mud.
Then there was a tremendous sound, the gnarling and smashing of metal and a grinding that he felt up and down his spinal column as the body of the aircraft struck the rocks and then settled into them, moving in fits and starts, like an animal dying.