casualtyn.[F. casualit, LL. casualitas.]1. That which comes without design or without being foreseen; contingency.()Losses that befall them by mere casualty. (Sir W. Raleigh.)2. Any injury of the body from accident; hence, death, or other misfortune, occasioned by an accident; as, an unhappy casualty.()3. (Mil. & Naval) Numerical loss caused by death, wounds, discharge, or desertion.()Casualty ward, A ward in a hospital devoted to the treatment of injuries received by accident.()()