There are many street names that are used to refer to marijuana. When you are in the street you will hear names like cannabis, pot, grass, roach, joint, hashish, ganja, hemp, panama red, ragweed and weed, among others. These are all names that marijuana users use to refer to this addictive drug. This is one of the most widely used drugs in the world. It is an illegal drug in most states; however, there are areas where it has been allowed.