Definition: something twisted and tight and swollen
Usage: their muscles stood out in knots; the old man's fists were two great gnarls; his stomach was in knots
Main entry: murmur, mutter, gnarl, grumble, croak
Definition: make complaining remarks or noises under one's breath
Usage: she grumbles when she feels overworked
Main entry: gnarl
Definition: twist into a state of deformity
Usage: The wind has gnarled this old tree