a person who keeps account books or systematic records of money transactions.

A bookkeeper's task had very little to do with accounting. He directly supervised the agricultural laborers in the field, usually on a sugar estate.(See Occupations)

someone who records the transactions of a business

A person keeping the record of accounts and other financial transactions.

Keeps track of your bookkeeping records. In most cases you'll want a "full charge" bookkeeper - one who can pay bills, properly code them, track accounts receivable and payable, do payroll, and properly prepare financial statements. Some bookkeepers will organize the information for an accountant who then prepares the financial statements and tax returns.