The definition of a casualty is a serious accident.
(noun)A fatal car crash is an example of a casualty.
Casualty is defined as a person or thing lost or destroyed by an accident or military action.
(noun)See casualty in Webster's New World College Dictionary
noun pl. casualties
Origin: ME & OFr casuelte < ML casualitas: see casual
See casualty in American Heritage Dictionary 4
noun pl. ca·su·al·ties
Origin:
Origin: Middle English casuelte
Origin: , from Old French
Origin: , from Medieval Latin cāsuālitās, chance, accident
Origin: , from Latin cāsuālis, fortuitous; see casual
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