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



BrE BrE//ˈpennaɪf//
; NAmE NAmE//ˈpennaɪf//
(pl. penknives
BrE BrE//ˈpennaɪvz//
; NAmE NAmE//ˈpennaɪvz//
(also pocketknife especially in North American English)
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a small knife with one or more blades that fold down into the handle He pulled the penknife out of his pocket and opened it.
See the Oxford Advanced American Dictionary entry: penknife