WordNet (r) 3.0 (2006):

passbook
    n 1: a record of deposits and withdrawals and interest held by
         depositors at certain banks [syn: bankbook, passbook]

Moby Thesaurus II by Grady Ward, 1.0:

28 Moby Thesaurus words for "passbook":
   account book, accounts payable ledger, accounts receivable ledger,
   balance sheet, bank ledger, bankbook, books, card ledger, cashbook,
   cost card, cost ledger, cost sheet, daybook, factory ledger,
   inventory, journal, ledger, log, logbook, purchase ledger,
   record book, register, registry, sales journal, sales ledger,
   stock ledger, stores ledger, suspense ledger