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Definition of serial killer noun from the Oxford Advanced Learner's Dictionary

serial killer

noun
 
/ˈsɪəriəl kɪlə(r)/
 
/ˈsɪriəl kɪlər/
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  1. a person who murders several people one after the other in a similar way
    • Police say that they have no proof that a serial killer is responsible for the four murders.
    Topics Crime and punishmentc2
See serial killer in the Oxford Advanced American Dictionary
hat-trick
noun
 
 
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