a death caused by an accident or by violence, or someone who has died in either of these ways(事故或暴力事件中的)死亡,死者
There are thousands of traffic fatalities (= deaths in traffic accidents) every year.每年因交通事故有数千人死亡。
The first fatalities of the war were civilians.战争中首当其冲丧命的是平民百姓。