casualty

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. An accident, especially one involving serious injury or loss of life.
2. n. One injured or killed in an accident: a train wreck with many casualties.
3. n. One injured, killed, captured, or missing in action through engagement with an enemy. Often used in the plural: Battlefield casualties were high.
4. n. One that is harmed or eliminated as a result of an action or a circumstance: The corner grocery was a casualty of the expanding supermarkets.

Century Dictionary and Cyclopedia

1. n. Chance, or what happens by chance; accident; contingency.
2. n. An unfortunate chance or accident, especially one resulting in bodily injury or death; specifically, disability or loss of life in battle or military service from wounds, etc.: as, the casualties were very numerous.
3. n. In Scots law, an emolument due from a vassal to his superior, beyond the stated yearly duties, upon certain casual events.
4. n. plural In the military service, the losses in a command due to any cause whatsoever, as resignation, discharge, dismissal, desertion, capture, wounds, or death.

Wiktionary

1. n. obsolete Chance nature; randomness.
2. n. Something that happens by chance, especially an unfortunate event; an accident, a disaster.
3. n. A person suffering from injuries or who has been killed due to an accident or through an act of violence.
4. n. UK The accident and emergency department of a hospital

GNU Webster's 1913

1. n. That which comes without design or without being foreseen; contingency.
2. n. Any injury of the body from accident; hence, death, or other misfortune, occasioned by an accident.
3. n. (Mil. & Naval) Numerical loss caused by death, wounds, discharge, or desertion.

WordNet 3.0

1. n. someone injured or killed in an accident
2. n. an accident that causes someone to die
3. n. someone injured or killed or captured or missing in a military engagement
4. n. a decrease of military personnel or equipment