appy /ˈæ.pi/ noun6 •(informal) An appetizer.if you get an appy or a dessert it's on you — 2017 •(informal) Short for appaloosa (“type of horse”).[…] she felt pride, like the day a grown-up Cheryl was inducted into the Appaloosa Horse Club's Hall of Fame for riding appys, a type of spotted ranch horse known for its blazing bursts of speed. — 2023 •(slang) Appendix. •(slang) Appendicitis. •(slang) Appendectomy. •An apple.I want appy juice. formsAppies · Appys · appies · appys