qir.yat san.nah is the proper name of the place identified with Debir and named as the city Caleb challenges others to capture.

The attested proper-noun forms designate a place identified as Debir: it is named as Debir's former name in Joshua 15:15 and Judges 1:11, explicitly equated with Debir in Joshua 15:49, and presented as the city to be struck and captured in Joshua 15:16 and Judges 1:12.

1. Place name identified with Debir · dominant

   All five occurrences are tagged Noun · Proper and name the same place. In Joshua 15:15 and Judges 1:11, the APB renders the clause "the former name of Debir was Kiriath-sannah"; in Joshua 15:49 it renders "Kiriath-sannah—it is Debir." In Joshua 15:16 and Judges 1:12, the place is the object of Caleb's challenge to strike and capture.

   Joshua 15:15Joshua 15:16Joshua 15:49Judges 1:11Judges 1:12

In the Anselm Project Bible: The APB consistently presents the term as "Kiriath-sannah." It describes it as Debir's former name in Joshua 15:15 and Judges 1:11, equates it with Debir in Joshua 15:49, and names it as the city to be captured in Joshua 15:16 and Judges 1:12.