Roaches meaning : A cockroach. An extra curve of material added to the leech (aft edge) of a sail to increase the sail area. A kind of headdress worn by some of the indigenous peoples of North America. (smoking) Marijuana; cannabis used as a drug. (smoking) A butt of a marijuana cigarette. (smoking) The filter of a rolled cigarette or joint, made from card or paper. A bed or stratum of some mineral. Gritty or coarse rock; especially Portland stone or similar limestone.