ETYM French journal. Related to Journal.
1. A periodical dedicated to a particular subject.
2. A record book as a physical object.

A computer-based log or record of transactions that takes place in a computer or across a network. A journal could be used, for example, to record message transfers on a communications network, to keep track of system activities that alter the contents of a database, or to maintain a record of files that have been archived for storage or deleted from the system. A journal is often kept as a means of reconstructing events or sets of data should they become lost or damaged. See also audit trail.

The part of the axle contained by a bearing.