who’s who
noun /ˌhuːz ˈhuː/
/ˌhuːz ˈhuː/
- [uncountable] people's names, jobs, status, etc.
- You'll soon find out who's who in the office.
- [singular] a list or book of facts about famous people
- The list of delegates attending read like a who's who of the business world.
CultureWho's Who is a British book, published every year, which gives the personal details of important, rich or famous people. The details are written by the people themselves, and some of them write in a humorous way about their hobbies and interests. It was first published in 1849.