means The killing of one human being by another, whether deliberate, reckless, or accidental — a neutral umbrella term that covers everything from murder to legally justified killing.

from From Latin homicidium, 'the slaying of a person,' welding homo ('human being,' the same root that gives us 'human') to -cida/-cidium, from caedere, 'to cut down, kill' — the same lethal verb hiding in suicide, genocide, and pesticide. It reached English through Old French homicide, carrying both meanings at once: the act of killing and, oddly, sometimes the killer himself.