Homicide which is culpable but does not rise to the level of murder; unlawful killing of a human being which does not constitute murder.
Used other than figuratively or idiomatically: see culpable, homicide.
An act that constitutes the crime of first-degree murder.
The criminal offence of murder in a form considered by law to be the most serious; the precise distinction may vary by jurisdiction but typically involves premeditation, or the choice of victim or other circumstances being regarded as especially blameworthy.