If the dreamer is killing an enemy, this implies the end of a difficult time in his life attained through his own efforts.
If the dreamer accidentally kills someone, caution in dealing with upcoming situations is called for.
Dreaming of actually being killed is a warning: Something in your life is “killing” your joie de vivre, and the situation should be rectified right away.
Rarely, a death. But for the most part, dreaming of killing is NOT a harbinger of death – and, of course, the dreamer’s death is never shown.
Astrological parallels: Pluto, Scorpio Tarot parallel: Death