A Roach is vernacular for the remainder of a spliff after most has been smoked. It is derived from the Mexican Spanish slang term for marijuana, la cucaracha, "cockroach". These can be smoked further through use of roach clips. They are often discolored to a yellow-brown by the build-up of resin. Image File history File linksMetadata Roach_joint_comparison. ... Image File history File linksMetadata Roach_joint_comparison. ... A spliff. ... A spliff. ... Mexican Spanish is the form of the Spanish language spoken in Mexico by over 90% of the population. ... A Cannabis sativa plant The psychoactive drug cannabis, also called marijuana or hashish, is produced from parts of the cannabis plant, primarily the cured flowers and gathered trichomes of the female plant. ... It has been suggested that Amish clip be merged into this article or section. ...