Meaning of “murder” - Learner’s Dictionary

murder

noun [ C, U ] uk us /ˈmɜːdər/

B1 the crime of intentionally killing someone:

to commit murder
She was charged with attempted murder.
a murder charge/trial
be murder informal

to be unpleasant or cause difficulty:

Driving in Chicago at rush hour is murder.

(Definition of “murder noun” from the Cambridge Learner’s Dictionary © Cambridge University Press)