brown star Share definition Flag Also referred to as the anus. Often characterized by 'striations' that are in a star pattern. Wow, that girl has some nice striations on her brown star. brown star by Landon Howe January 15, 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