Definition of smithereens noun from the Oxford Advanced Learner's Dictionary

 

smithereens

 noun
noun
BrE BrE//ˌsmɪðəˈriːnz//
 
; NAmE NAmE//ˌsmɪðəˈriːnz//
 
[plural]
 
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Word Origin early 19th cent.: probably from Irish smidirín.Idioms
smash, blow, etc. something to smithereens
 
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(informal) to destroy something completely by breaking it into small pieces The bomb blew the car to smithereens.
See the Oxford Advanced American Dictionary entry: smithereens