Main entry  (Bibliographic 1XX):

The primary access point to a bibliographic record.  All other name, title, and/or name/title access points are added entries.

It is also defined as the complete catalog record of an item, presented in the form by which the entity is to be uniformly identified and cited.  The main entry may include the tracing(s).

In authority records, code a (008/14 - Appropriate) indicates that the 1XX field contains an established name, name/title, or uniform title heading that conforms to descriptive cataloging rules.  The heading is appropriate for use as a main or added entry in bibliographic records.

See also:

008/14  Heading use - main or added entry