Grass on and Turn in

Grass on verb - To give information (as to the authorities) about another's improper or unlawful activities.

Turn in and grass on are semantically related. In some cases you can use "Turn in" instead a verb "Grass on".

Turn in verb - To give (something) over to the control or possession of another usually under duress.

Grass on and turn in are semantically related. You can use "Grass on" instead a verb "Turn in".