1. phrasal verb
If a group of people close in on a person or place, they come nearer and nearer to them and gradually surround them. [V P + on] ⇒ Hitler himself committed suicide as Soviet forces were closing in on Berlin. [V P] ⇒ As Parretti walked across the tarmac, fraud officers closed in.
2. phrasal verb → close When winter or darkness closes in, it arrives. [V P] ⇒ The dark nights and cold weather are closing in.
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