en she.mesh is a proper place-name used as a boundary point in Joshua’s territorial descriptions.

The supplied verses use the proper noun as a named location reached or passed in descriptions of territorial boundaries.

1. Named boundary location · dominant

   In Joshua 15:7, the proper-noun form occurs where the border passes to its waters before reaching En-rogel. In Joshua 18:17, the border reaches the same named location in a sequence of boundary movements toward Geliloth and the stone of Bohan.

   Joshua 15:7Joshua 18:17

In the Anselm Project Bible: The APB presents the name as “En-shemesh” in both boundary descriptions.