Phrasso denotes bringing speech, a boast, or even lions’ mouths to a stop or closure.

The attested use consistently concerns stopping or closing: mouths are shut in Hebrews 11:33 and closed under the law in Romans 3:19, while a boast is said not to be stopped in 2 Corinthians 11:10.

1. Stopping or closing speech and expression · dominant

   In Hebrews 11:33, the aorist active plural form occurs in the clause about shutting lions’ mouths. In Romans 3:19, the aorist passive subjunctive singular occurs in the purpose clause that every mouth may be closed; in 2 Corinthians 11:10, the future passive singular concerns a boast that will not be stopped.

   Hebrews 11:33Romans 3:192 Corinthians 11:10

In the Anselm Project Bible: The APB presents the action as “shut” for lions’ mouths, “closed” for every mouth, and “stopped” for a boast. These are verse-level renderings rather than definitions.