To hand over or deliver something or someone to another party; in legal contexts, to extradite or surrender a person or to transfer custody.
警察は容疑者を国外に引き渡す手続きを始めた。
The police began procedures to extradite the suspect abroad.
会社は古い倉庫の鍵を次の担当者に引き渡した。
The company handed over the keys to the old warehouse to the next person in charge.
引き渡しの際は、必ず受領書にサインしてください。
When handing over (the goods), be sure to sign the receipt.