Webster's Revised Unabridged Dictionary · 1913

Lesion

Lesion (lē"zhun) , noun

[French lésion, Latin laesio, from laedere, laesum, to hurt, injure.]

(Civil Law) A hurt; an injury.
(a)
(Civil Law) Loss sustained from failure to fulfill a bargain or contract.
(b)
(Civil Law) Any morbid change in the exercise of functions or the texture of organs. — Burrill