ga.dah denotes banks or edges, especially those overrun by river waters.

The attested use points to banks or edges: three verses place the plural construct form in descriptions of waters going over river banks, while its contribution in the stronghold clause is not isolated by the translation.

1. Banks or outer edges · dominant

   In Joshua 3:15, the plural construct form occurs in the clause about the Jordan being full over its banks; in Joshua 4:18, the returning waters again go over all its banks. Isaiah 8:7 similarly places it in the description of the River rising over its channels and flowing over its banks. In 1 Chronicles 12:16, the same plural construct form occurs in the clause about coming to David's stronghold, but the APB does not make the term's specific contribution clear.

   Joshua 3:15Joshua 4:18Isaiah 8:71 Chronicles 12:16

In the Anselm Project Bible: The APB explicitly uses "banks" in Joshua 3:15, Joshua 4:18, and Isaiah 8:7, within descriptions of overflowing waters. In 1 Chronicles 12:16 it renders the clause as arrival at "the stronghold to David," so the term is not individually identifiable in the translation.