1. a small book that records deposits, withdrawals, and interest for a bank savings account

Examples

• She brought her passbook to the bank to update her account balance.
• The elderly man kept his passbook in a safe place at home.
• Before ATMs, people relied on their passbooks to track savings.
• The teller stamped the passbook after each transaction.
• My grandmother still prefers using a passbook instead of online banking.
• The passbook showed all deposits made over the past year.