τρῐχ-ίᾱσις · trich-iasis — LSJ
a disease of the eyelids, when they are introverted, and the lashes irritate the eye
a disease of the eyelids, when they are introverted, and the lashes irritate the eye (opp. ἐκτρόπιον), Gal. 19.437, Sever. ap. Aët. 7.68.
II a disease of the urethra, when the urine is full of small hair-like substances
a disease of the urethra, when the urine is full of small hair-like substances, Gal. 17(2).768.
III a disease in the breasts of women giving suck, such that the nipples crack into fine fissures
a disease in the breasts of women giving suck, such that the nipples crack into fine fissures, Erot.
2 a fissure, scratch
a fissure, scratch in a bone, Pall. in Hp.Fract. 12.273 C., [Gal.]14.782.