Rasta word for marijuana. Comes from "I" meaning "Haile Selassie I" or "G-d" or (any number of people plus) G-d, and "conSCIENCE" which one supposedly gains from smoking it.
Try some of dis Iscience mon, seen? Praise Jah Haile Selassie I, Jah Ras Tafari!
by pentozali April 01, 2008