se.khu is a proper name identifying the location of a great cistern on Saul’s route toward Ramah.

The attested use identifies Secu as the place of a great cistern encountered by Saul on his way toward Ramah.

1. Place name at a great cistern · dominant

   In 1 Samuel 19:22, the form is marked as a proper noun in the clause locating Saul at a great cistern; the APB renders the location as “the great cistern at Secu.”

   1 Samuel 19:22

In the Anselm Project Bible: In 1 Samuel 19:22, the APB presents the term in the place expression “the great cistern at Secu.” It confirms the location within the verse rather than isolating every contribution of the form.