penknife
noun /ˈpennaɪf/
/ˈpennaɪf/
(plural penknives
/ˈpennaɪvz/
/ˈpennaɪvz/
)(also pocketknife especially in North American English)
- a small knife with one or more metal blades that fold down into the handle
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- He pulled the penknife out of his pocket and opened it.