- to draw on (a bank account) in excess of the credit balance
- (transitive) to exaggerate in describing or telling
WordReference Random House Learner's Dictionary of American English © 2015
to try to draw or to spend an amount from (one's bank account, an allowance, etc.) that is greater than the money available to one: [no object]Your bank won't allow you to overdraw.[~ + object]You can't overdraw your account.