What does killer mean or Definition?

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List of meaning for killer

killer, slayer(noun)

someone who causes the death of a person or animal

cause of death, killer(noun)

the causal agent resulting in death

"heart disease is the biggest killer in the United States"

killer(noun)

a difficulty that is hard to deal with

"that exam was a real killer"

killer whale, killer, orca, grampus, sea wolf, Orcinus orca(noun)

predatory black-and-white toothed whale with large dorsal fin; common in cold seas

likely to cause or capable of causing death

killer viruses that claimed millions of lives

requiring considerable physical or mental effort

a killer exercise program guaranteed to whip you into shape

a dull, unpleasant, or difficult piece of work

weeding out that overgrown garden is going to be a killer

a person who kills another person

gunned down by hired killers

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