From Longman Dictionary of Contemporary EnglishWho's WhoˌWho's ˈWhotrademark abookproduced every year in the UK thatcontains analphabeticallist offamous andimportant people, such aspoliticians,writers, andentertainers, andprovidesinformation about theirachievements, theirfamilies etc. If a list of people ‘reads like a Who’s Who’ of something, itmeans that it contains alot of famous peopleThe list of guests read like a Who’s Who of the pop industry.who’s whowho’s whoPOSITION/RANKa)if you know who is who within a particularorganization or group, you know what eachperson’sname is and whatjob they do or whatposition they haveI’m just getting to know who’s who in the department.b)a who’s who of something a list of the important people within a particular organization or group – often used toemphasize that many important people areinvolved in somethingThe list of competitors reads like a who’s who of international tennis players. →whoExamples from the Corpuswho’s who•When I go to those familyreunions, I can neverrememberwho's who.•Which means you canfollow awholediscussion, as well ascheck outwho's who and how wellrespected.•Infact, it really is awho's who ofinternationalcanoetouring.•From Seles down, the list ofcompetitors reads like awho's who of internationaltennisplayers.•Its guest-list read like awho's who of the great and the good.
