“Zin” means flat

Zin: the name given to a portion of the desert tract between the Dead Sea, Ghor , and Arabah on the east, and the general plateau of the Tih which stretches westward. The country in question consists of two or three successive terraces of mountain converging to an acute single at the Dead Sea's southern verge, toward which also they slope. Kadesh lay in it, and here also Idumea was conterminous with Judah; since Kadesh was a city in the border of Edom. [See KADESH]. (Numbers 13:21; 20:1; 27:14; 33:36; 34:3; Joshua 15:1)