1 definition by Abdul Mohammed Jabar Ra'uf Karim Ali

Top Definition
A prison inmate who has turned informant on other inmates for protection or benefit.
"Gentlemen, we must determine
which of our fellow inmates has become the Rodentus Incarcerarium." - Anthony "Fat Tony" D'Amico, The Simpsons

Mug icon
Buy a Rodentus incarcerarium mug!