snitch

To inform on someone to a person in authority, typically to get them into trouble or to gain a reward.\nHe decided to snitch on his accomplices to get a shorter sentence.

To inform on others or betray a secret to an authority figure.\nNobody likes him because he is always snitching to the teacher.

A person who informs on others, especially someone who betrays their peers to the police or a supervisor.\nThe gang members viewed him as a snitch after he testified in court.

A small piece of food, typically a piece of meat, that is fried or cooked quickly.