What is the meaning of claw?

noun

• Sharp curved horny process on the toe of a bird or some mammals or reptiles.
• A mechanical device that is curved or bent to suspend or hold or pull something.
  • synonyms: hook
• A grasping structure on the limb of a crustacean or other arthropods.
  • synonyms: chela, nipper, pincer
• A bird's foot.

verb

• Move as if by clawing, seizing, or digging.
  • usage: "They clawed their way to the top of the mountain"
• Clutch as if in panic.
  • usage: "She clawed the doorknob"
• Scratch, scrape, pull, or dig with claws or nails.
• Attack as if with claws.
  • usage: "The politician clawed his rival"