The farthest or most remote part, section, or point. The climbers reached the extremity of the mountain peak just before sunset.
A limb of the body, especially a hand or foot. The doctor examined the patient's extremities for signs of frostbite.
The greatest or utmost degree or intensity of something. The extremity of the heat made it impossible to continue working outside.
A condition or state of extreme necessity or distress. In the extremity of their financial crisis, they had to sell their house.