An account book is a type of bookkeeping tool used to record financial transactions. The crossword solutions for the term account book include REGISTER (8 letters), JOURNAL (7 letters), LEDGER (6 letters), LOG (3 letters), FOLIO (5 letters), DAYBOOK (7 letters), and balance sheet (12 letters). REGISTER, JOURNAL, and LEDGER are all types of books that record financial transactions in chronological order. LOG is a book that records events or activities. FOLIO is a book that contains financial accounts. DAYBOOK is a book that records daily transactions. Balance sheet is a financial statement that summarizes a company's assets, liabilities, and equity.