IPA: //ˈbʊkˌkiːpər//
KK: /ˈbʊkˌkipər/
A person who manages and keeps financial records for a business, including transactions and accounts.
The bookkeeper ensured that all financial records were accurate and up to date.
Bookkeeper → It is formed from "book" (from Old English *bōc*, meaning a written work or record) and "keeper" (from Old English *cēpan*, meaning to guard or take care of). A bookkeeper is someone who takes care of or manages written financial records.
Think of someone who 'guards' ('keeper') the 'written records' ('book') — that's why a bookkeeper manages financial documents.