[n] any visible abnormal structural change in a bodily part
[n] any break in the skin or an organ caused by violence or surgical incision
abrasion, bite, cut, excoriation, gash, harm, hurt, injury, laceration, pathology, raw wound, scrape, scratch, slash, slice, stigmata, trauma, tubercle, ulcer, ulceration
\Le"sion\ (l[=e]"zh[u^]n), n. [F. l['e]sion, L. laesio, fr. laedere, laesum, to hurt, injure.] A hurt; an injury. Specifically: (a) (Civil Law) Loss sustained from failure to fulfill a bargain or contract. --Burrill. (b) (Med.) Any morbid change in the exercise of functions or the texture of organs. --Dunglison.