sweeny

noun
swee·​ny
variants: also sweeney \ ˈswē-​nē How to pronounce sweeney (audio) \ or swinney \ ˈswin-​ē How to pronounce swinney (audio) \
plural sweenies also sweeneys or swinneys

Medical Definition of sweeny

: an atrophy of the shoulder muscles of a horse broadly : any muscular atrophy of a horse