What is the meaning of banker's acceptance?

banker's acceptance is a draft drawn on a bank, which when accepted by the bank, constitutes the bank's obligation to pay the draft writer's bills from a specified creditor when the bills are due. The bank literally stamps "Accepted for payment by (name of bank) on (date)" across the face of the draft. Acceptance converts a deposit. R's "order to pay" into an unconditional "promise to pay" by the accepting bank. Bankers acceptances are effectively a guaranty of payment for a purchase and are usually used in financing the import, export, transfer or storage of goods, and qualify as liquid assets when held by a thrift institution.