Catweed Share definition Flag Weed that is of poor quality in smell, taste, appearance, and THC content (Esp. in Minneapolis metro area). "Dude, I heard Jesse just picked up a 80 dollar ounce" "Yeah, but it's probably just catweed..." Catweed by Mmarquis July 19, 2010 0 0 Get merch Get the Catweed mug. Buy Now — $32.95 See more merch