›BANKINGan amount of money that a customer with a bank account is temporarily allowed to owe to the bank, or the agreement which allows this: run up/have an overdraftResearch shows that 58% of students have an overdraft.I paid off my overdraft as soon as I got my pay cheque.We have an overdraft facility of £500 with our bank.an overdraft fee/rate/chargea free/interest-free overdraft