See sty in American Heritage Dictionary 4
also styenoun pl. sties sties also styes (stīz)
Origin: Alteration of Middle English styanye
Origin: : styan, sty (from Old English stīgend, from present participle of stīgan, to rise; see steigh- in Indo-European roots)
Origin: + eye, ye, eye; see eye.
Learn more about sty