do.khi denotes the pounding attributed to the rivers as they lift up their voice.

The attested use names the pounding associated with the rivers as the verse twice describes them lifting up their voice.

1. Pounding of the rivers · dominant

   In Psalm 93:3, the construct singular noun occurs after the repeated statement that the rivers lift up their voice; the APB renders the final clause, “the rivers lift up their pounding.”

   Psalm 93:3

In the Anselm Project Bible: In Psalm 93:3, the APB presents the term in the clause “the rivers lift up their pounding.” This identifies the verse’s presentation rather than a precise lexical equivalence.