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English definition of “pin”

pin

verb [T]     /pɪn/ (present participle pinning, past tense and past participle pinned)
B1 to fasten something with a pin: We're not allowed to pin anything on these walls. She had a red ribbon pinned to her collar.Fastening and tying
pin sb to/against/under, etc to force someone to stay in a position by holding them: They pinned him to the ground. → See also pin your hopes on sb/sthCapturing or taking possession of thingsGetting, receiving and accepting
(Definition of pin verb from the Cambridge Learner's Dictionary © Cambridge University Press)

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