mooshi Share definition Flag greeting. means "hello". also used as adjective, noun, verb, adverb, preposition, exclamation, etc. Claire: Mooshi! Teresa: mooshi mooshi fa Claire: awww mooshi! Teresa: MOOOOOOOSHI mooshi by Helen November 27, 2004 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