drop a dime on someone vs snitch

drop a dime on someone

• To inform on (a person); to turn someone in. 

snitch

• To inform on, especially in betrayal of others. 

• To contact or cooperate with the police for any reason. 

• A ball used in the sport of Quidditch. 

• A thief. 

• An informer, one who betrays his group. 

• A nose. 

• A tiny morsel.