Ekkolumbao describes a prisoner swimming away in an attempt to escape.

Its sole attested use describes swimming away as the means by which a prisoner might escape.

1. Swimming away to escape · dominant

   In Acts 27:42, ἐκκολυμβήσας is an aorist active participle in the soldiers' plan to prevent any prisoner from escaping; the APB renders the clause "so that none might swim away and escape."

   Acts 27:42

In the Anselm Project Bible: In Acts 27:42, the APB presents the action as "swim away" within the prisoners' possible escape.