peesh Share definition Flag noun. Slang term for a female genitalia. (origin Italian peeshadil = vagina) Yo, bust up on that peesh. (Have sex with that girl) peesh by Lilpapadoc March 17, 2007 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