fink on someone

fink on (someone)

To report someone's misdeeds to an authority figure. The gang was determined to find the traitor who finked on them to the police. How could you fink on me to my parents? Now I'm grounded for a whole month!
See also: fink, on

fink (on someone)

in. to inform on someone. Rocko never finks on his friends.
See also: fink, on, someone