who's who

Etymology
From Who's Who, the British publication of biographies for the upper class, first published in 1849.

Noun

 * 1)  A publication containing biographies of well-known or important people.
 * 2) * 1914, The Everyman Encyclopædia:
 * Nearly every country has now a Who's Who, which gives a brief outline of the life and work of living men who have distinguished themselves in various ways.
 * 1)  A list of notable, famous, or upper-class people.
 * 2)  Collectively, the elite class.
 * 3)  A person appearing in a Who's Who publication.
 * 4)  A celebrity or famous person, someone likely to be in such a publication.
 * 5)  The identities of specific people, understood in terms of such distinguishing characteristics as their backgrounds, prominence, achievements, jobs, etc., as a basis for comparing them and especially as a basis for ranking them within a social group.
 * 1)  Collectively, the elite class.
 * 2)  A person appearing in a Who's Who publication.
 * 3)  A celebrity or famous person, someone likely to be in such a publication.
 * 4)  The identities of specific people, understood in terms of such distinguishing characteristics as their backgrounds, prominence, achievements, jobs, etc., as a basis for comparing them and especially as a basis for ranking them within a social group.
 * 1)  The identities of specific people, understood in terms of such distinguishing characteristics as their backgrounds, prominence, achievements, jobs, etc., as a basis for comparing them and especially as a basis for ranking them within a social group.

Translations

 * Danish: blå bog, Kraks blå bog
 * Hungarian: ki kicsoda
 * Norwegian: hvem som er hvem
 * Russian: