gnarled

(verb) twist into a state of deformity. Synonyms: gnarl. Example: "The wind has gnarled this old tree."

(verb) make complaining remarks or noises under one's breath. Synonyms: murmur, mutter, grumble, croak, gnarl. Example: "She grumbles when she feels overworked."

(adj) used of old persons or old trees; covered with knobs or knots. Synonyms: gnarly, knotted, knotty, knobbed. Examples: "Gnarled and knotted hands." "A knobbed stick."