'Extremity' in the Bible

Before they lie down, the men of the city -- men of Sodom -- have come round about against the house, from young even unto aged, all the people from the extremity;

and he giveth to me the cave of Machpelah, which he hath, which is in the extremity of his field; for full money doth he give it to me, in your midst, for a possession of a burying-place.'