dunny Share definition Flag Australian term for any toilet. "I need to go to the dunny." "I jus' dropped a fat shit in the dunny." dunny by Diego September 9, 2003 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