If you hear on your car radio that there has been a traffic accident up ahead with one fatality, you should be very thankful you were not involved. A fatality is, quite simply and grimly, a human death.
You will often hear fatality used in conjunction with the aftermath of a disaster, natural or otherwise. For example, a news broadcaster may say, "We have received reports of at least one fatality as a result of the storm." Fatality has its roots in the Latin word fatalis, meaning "decreed by fate." When it comes to fatality, being in the wrong place at the wrong time can certainly be ill-fated.