The Collaborative International Dictionary of English v.0.48:

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

   Syn: Accident; contingency; fortuity; misfortune.
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