slang The end fragment (butt) of a hand-rolled cigarette, especially one filled with marijuana (a "joint"). He kept trying to light the roach while it was in his mouth and nearly set his moustache on fire! We collected all the roaches in the ash tray and filled a bowl with what we managed to scrape out of them.

slang A clasp, clamp, or other similar fastener, especially an alligator clip, used to hold the end fragment (the "roach") of a marijuana cigarette (a "joint") while it is being smoked so as to avoid the smoker's fingers getting burned. He makes fun of me for using a roach pick, but I had the last laugh when he burned his fingers and dropped his roach in a puddle.

slang A clasp, clamp, or other similar fastener, especially an alligator clip, used to hold the end fragment (the "roach") of a marijuana cigarette (a "joint") while it is being smoked so as to avoid the smoker's fingers getting burned. He makes fun of me for using a roach clip, but I had the last laugh when he burned his fingers and dropped his roach in a puddle.

slang A food truck, a truck or van outfitted to be a mobile kitchen used to prepare and sell food at various locations. Everyone in the office likes to get food from the roach coach that parks outside at lunchtime, but I don't really care for anything they serve. There's a roach coach that always comes around to the dorms and frats in the evening to sell munchies to the stoned college students.