passbook noun3 •A customer's record of deposits and withdrawals from a savings account or current account at a bank, typically recorded in a small booklet. The bank keeps its own record, which is final in any dispute. •(old-fashioned) A book that passes between a trader and a customer, used to record credit purchases. •(South-Africa, historical) A kind of internal passport used during apartheid to limit the movements of citizens outside of their homelands or designated areas. formspassbooks