Prehensility

Prehensility is the quality of an organ that has adapted for grasping or holding. Examples of prehensile body parts include the tails of New World monkeys and opossums, the trunks of elephants, the proboscises of tapirs, and even the penises of dolphins. Logically this should apply to hands as well but this would not be normal usage of the word.

The word is derived from the Latin term prehendere, meaning "to grasp."