paperknife

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paper·knife

BrE

/ˈpeɪpənaɪf/

NAmE

/ˈpeɪpərnaɪf/

noun

(

paper·knives

)

(

especially BrE

)

(

NAmE usually

ˈletter opener

)

a knife used for opening envelopes 拆信刀；开信刀