Roll On 

To snitch or divulge private information about a person. Mainly equivalent to snitch though, used in criminal terms.
To snitch for some sort of protection or legal incentive.

"Shiiit son, why the fuck am I in jail? My friend got out on parole!"
"Hah, stupidass, he rolled on you!"
"H-He wouldn't roll on me...I think..."
"Hah, your ass is grass!"

Roll On by TFE May 28, 2006

roll on 

Marijuana rolled onto a cigarette with either cigarette paper or a blunt wrapper.

Yo $kip, you gots any Bambu, cause I wanna build me a big roll on.

roll on by $mokey August 19, 2004

Roll on 

Marijuana rolled onto a cigarette

Is that a roll on?

Roll on by thahib October 6, 2009

Roll on 

A family in Bromley who all share the same roll on deodorant

The Family all share the same roll on to save money

Roll on by Shovelboy123 October 18, 2019

Roll-On 

Creative masterpiece used for smoking weed, where a joint/ spliff is rolled at the end of a cigarette. Better smoking, as well as contaminates the cigarette, creating two joints essentially in one. The modified cigarette is called a 'Funk'.

A- Man i feel for something new

B- Lets smoke a roll-on?

Roll-On by HardestHard November 22, 2011

Roll-on 

when you have a roll on deodorant

" Hey, does anybody have a deodorant"
"I can only provide a ROLL ON"
"A roll-on is a kind of deodorant"

Roll-on by Debra Biblooby August 26, 2019

Roll-on Roll-off Ships 

Roll-on Roll-off (RORO) ships are vessels have built-in ramps which allow the vehicles and other cargo to be efficiently roll on and roll off the vessel. Most commonly used in the international transportation of automobiles.

Roll-on Roll-off ships, ROROs are often the least expensive, most efficient method of overseas car shipping

-- titanship.com

Roll-on Roll-off Ships by Jimgogogo August 25, 2010