Passbook (noun)

1. A small book with a plastic cover that is used for recording financial transactions, especially savings deposits, in a bank.
2. A record of transactions in a savings account or other financial account.

Origin:

The origin of the word 'passbook' is not clear, but it is believed to come from the words 'pass' and 'book' meaning a book used to pass or record transactions.

Examples:

1. He opened a savings account and was given a passbook to record all his deposits and withdrawals.
2. The bank teller stamped the passbook to show that the deposit was made.
3. She went to the bank to update her passbook with the latest transaction.
4. The passbook showed the balance of the account.
5. He used his passbook as collateral to obtain a loan.