(uncountable) The noun "murder" refers to the crime of deliberately killing a person without moral justification, or in jurisdictions that use the felony murder rule, it can also refer to the act of committing or abetting a serious crime that results in the killing of a person, regardless of intent.

(countable) The act of deliberate killing of a person or other being without moral justification, especially with malice aforethought.

(uncountable, used as a predicative noun) Something terrible to endure.

(countable, collective) A group of crows; the collective noun for crows.

To deliberately kill (a person or persons) without justification, especially with malice aforethought.

(transitive, sports, figurative, colloquial, hyperbolic) To defeat decisively.

(figurative, colloquial, hyperbolic) To kick someone's ass or chew someone out (used to express one’s anger at somebody).

To botch or mangle.

(figurative, colloquial, Britain) To devour, ravish.