Jow Share definition Flag Jow: Slang for Marijuana in parts of Northern Illinois, specifically Mchenry County. "lets go smoke some jow" "Got any poon jow?" "Hey Jowsman hows your jow" "Whats up smokejow?" Jow by Galapagos Tortuga January 26, 2009 Words you can keep railfan mug chonk mug chud mug based mug 67 mug slime mug mogging mug chopped mug thot mug glazing mug huzz mug yams mug larp mug unc mug cracked mug simp mug baddie mug bop mug lolcow mug