chalazion - chronic sty of eye. This word sty is not related to pig parlour.
sty(2) or stye
n.,
pl. sties 5< obs. dial. styany (taken as sty on eye) < dial. styan, rising < OE stigend, prp. of stigan
, to climb, rise: see STILE16 a small, inflamed swelling of a sebaceous gland on the rim of an eyelid