At the Lotus Tree of the Extremity.

He was driven to the last extremity.

The smallness of that probability is what we mean by extremity.

Observe body habitus and look for lower extremity atrophy or skin changes.

They said By Allah! (never) wilt thou cease to remember Joseph until thou reach the last extremity of illness, or until thou die!

SERVANT Madam, the guests are come, supper served up, you called, my young lady asked for, the nurse cursed in the pantry, and everything in extremity.

If we go to the dictionary, it says, It's the lower extremity of a leg that is in direct contact with the ground in standing or walking

The Lincoln hills rose up around me at the extremity of a snowy plain, in which I did not remember to have stood before and the fishermen, at an indeterminable distance over the ice, moving slowly about with their wolfish dogs, passed for sealers, or Esquimaux, or in misty weather loomed like fabulous creatures, and I did not know whether they were giants or pygmies.

The Cachalot (Sperm Whale) is not only better armed than the True Whale (Greenland or Right Whale) in possessing a formidable weapon at either extremity of its body, but also more frequently displays a disposition to employ these weapons offensively and in manner at once so artful, bold, and mischievous, as to lead to its being regarded as the most dangerous to attack of all the known species of the whale tribe.