The killing of another person without justification or excuse, especially the crime of killing a person with malice aforethought or with recklessness manifesting extreme indifference to the value of human life. An instance of such killing.
Slang Something that is very uncomfortable, difficult, or hazardous: The rush hour traffic is murder.
A flock of crows.
To kill (another human) in an act of murder.
To kill brutally or inhumanly: Thousands of civilians were murdered in the bombardment.
To put an end to; destroy: murdered their chances.
To spoil by ineptness; mutilate: a speech that murdered the English language.