who's who

noun, often capitalized both Ws
\ˌhüz-ˈhü \

Definition of who's who 

1 : a compilation of brief biographical sketches of prominent persons in a particular field a who's who of sports figures

2 : the leaders of a group : elite

3 : a listing or grouping of notable persons or things

First Known Use of who's who

1917, in the meaning defined at sense 1

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Dictionary Entries near who's who

WHO

who'd

who's counting?

who's who

whoa

who asked you?

who can tell

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The first known use of who's who was in 1917

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