extremity

noun4

1. •
   The most extreme or furthest point of something.

   • [B]estowe your love on him, who, were it not to do you service, would through the extremitie of love rather wish to die then live. — 1576
2. •
   A hand or foot.

   • Guillain–Barré syndrome causes one to not be able to move one’s extremities.
3. •
   A limb (“major appendage of a human or animal such as an arm, leg, or wing”).

   • The danger of wounds of the extremities consists in the injury done to the blood-vessels, nerves, articulations, and bones. — 1878
4. •
   An extreme measure.