Definition of jack-in-office in English:

jack-in-office

Line breaks: jack-in-office

Entry from British & World English dictionary

noun

British
A self-important minor official: these jumped-up jacks-in-office have too much their own way

Definition of jack-in-office in:

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Word of the day dinkum
Pronunciation: ˈdɪŋkəm
adjective
(of an article or person) genuine, honest, true