What is the meaning of gnarled?

verb

• Twist into a state of deformity.
  • usage: "The wind has gnarled this old tree"
  • synonyms: gnarl
• Make complaining remarks or noises under one's breath.
  • usage: "she grumbles when she feels overworked"
  • synonyms: murmur, mutter, grumble, croak, gnarl

adjective

• Used of old persons or old trees; covered with knobs or knots.
  • usage: "gnarled and knotted hands"; "a knobbed stick"
  • synonyms: gnarly, knotted, knotty, knobbed