1. a book of blank checks issued by a bank to a customer for withdrawing money from their account
Usage: British English spelling; American English uses 'checkbook'; typically contains 25–50 checks per book
2. the ability or willingness to spend money freely, especially to solve problems or gain advantage
Usage: figurative use; often used in phrases like 'chequebook journalism' or 'chequebook diplomacy'

Examples

• She wrote a check from her chequebook to pay the utility bill.
• I need to order a new chequebook from my bank.
• The company used chequebook diplomacy to secure the contract.
• Chequebook journalism has been criticized for paying sources for exclusive stories.
• He balanced his chequebook every month to track his spending.
• The chequebook contained 50 blank checks ready to use.