Claw

noun

1. A curved, pointed horny nail on each digit of the foot of a mammal, reptile, or bird.
2. A foot equipped with such.
3. The pincer (chela) of a crustacean or other arthropod.
4. A mechanical device resembling a claw, used for gripping or lifting.
5. A slender appendage or process, formed like a claw, such as the base of petals of the pink.