the crime of unlawfully and intentionally killing somebody: compare manslaughter
informal something that is very difficult, dangerous, or disagreeable
It was murder trying to find a parking space
get away with murder
informal to do whatever one likes without being punished or having to face the consequences
scream/yell/cry blue/bloody murder
informal to make a huge fuss or a loud protest
The fans will scream blue murder if the price of tickets goes up again
[Old English morthor, reinforced in Middle English by Old French murdre]