English

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

 

paperknife

 noun
noun
BrE BrE//ˈpeɪpənaɪf//
 
; NAmE NAmE//ˈpeɪpərnaɪf//
 
(pl. paperknives) (especially British English) (usually North American English letter opener)
 
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a knife used for opening envelopes