mid.din is a proper name listed among places in the wilderness in Joshua 15:61.

The attested use presents mid.din as a proper name in a list of wilderness places.

1. A place named in a wilderness list · dominant

   In Joshua 15:61, the form מִדִּ֖ין is tagged as a proper noun and occurs between other names in the clause listing places in the wilderness; the APB renders the list as “Beth-arabah, Middin, and Secacah.”

   Joshua 15:61

In the Anselm Project Bible: In Joshua 15:61, the APB presents the term as “Middin” within a list of wilderness places.