definition of
gnarl

[1] #1 gnarl n. [knot] something twisted and tight and swollen; "their muscles stood out in knots"; "the old man's fists were two great gnarls"; "his stomach was in knots". wn

[2] #2 gnarl v. twist into a state of deformity; "The wind has gnarled this old tree". wn

[3] #3 gnarl v. [murmur, mutter, grumble, croak] make complaining remarks or noises under one's breath; "she grumbles when she feels overworked". wn