si.rah is the proper name of the cistern from which Abner was brought back.

The attested form is a proper name identifying the Cistern of Sirah, the place from which Abner was brought back in 2 Samuel 3:26.

1. Proper name of a cistern · dominant

   In 2 Samuel 3:26, the form is tagged as a proper noun and identifies the cistern from which Abner was brought back; the APB renders the phrase “the Cistern of Sirah.”

   2 Samuel 3:26

In the Anselm Project Bible: In 2 Samuel 3:26, the APB presents the name in the phrase “the Cistern of Sirah.” The clause as a whole confirms the place-name use.