Farmasist Share definition Flag Street slang for drug dealer. Not to be confused with Pharmacist. Yo, I picked up some chronic from my Farmasist, Duane Reed aka trucky, it's the bomb. Farmasist by Brigadere General Franklin P. Pussycock III July 8, 2004 0 0 Get merch Get the Farmasist mug. Buy Now — $32.95 See more merch