birdo Share definition Flag A pink dinosaur with a bow, originating from Mario Bros. 2. Birdo is actually a guy, as stated from the instruction manual. Dammit, I'm always stuck with birdo and Waluigi in Double Dash! birdo by Mark February 17, 2005 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