Dictionary
1killer
noun kill·er \ˈki-lər\
: a person or thing that kills someone or something
: something that is very difficult
Full Definition of KILLER
1
: one that kills
2
3
a : one that has a forceful, violent, or striking impact b : one that is extremely difficult to deal with
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First Known Use of KILLER
15th century
2killer
adjective
: causing death or destruction
: very impressive or appealing
: very difficult
Full Definition of KILLER
1
: strikingly impressive or effective <a killer smile> <a killer résumé>
2
: extremely difficult to deal with <a killer fastball>; also : causing death or devastation <a killer tornado>
See killer defined for English-language learners
First Known Use of KILLER
1951
Related to KILLER
KILLER Defined for Kids
1killer
noun kill·er \ˈki-lər\
Definition of KILLER for Kids
: someone or something that takes the life of a person or animal
2killer
adjective
Definition of KILLER for Kids
1
: very impressive or effective <a killer smile>
2
: very difficult <a killer exam>
3
: causing death or ruin <a killer tornado>
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