sty /staɪ/ BrE AmE noun ( plural sties ) [countable]
[ Sense 1: Language: Old English ; Origin: stig ]
[ Sense 2: Language: Old English ; Origin: stigend , from stigan 'to rise' ]
1 . a place where pigs are kept SYN pigsty
2 . ( also stye ) an infected place on the edge of your ↑ eyelid , which becomes red and swollen