Seems boxing star Adrien Broner just blew the lid off his secret settlement with the victim in a bowling alley attack ... hinting he paid the guy $125,000 to make the case go away.
TMZ Sports broke the story ... Broner was sued by a man who claims the boxer beat him down and robbed him outside of a Cincinnati bowling alley back in January.
The accuser sued Broner in civil court and filed a police report -- but both cases were dropped when the accuser decided to back off.