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English definition of “second-in-command”

second-in-command

noun [S]     /ˌsek.ənd.ɪn.kəˈmɑːnd/ US  /-ˈmænd/
someone who is almost as important as the person in charge: Well, if the manager isn't available I'd like to speak to the second-in-command.Bosses, managers and directorsPeople in charge of or controlling other people
(Definition of second-in-command noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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