(idiomatic, colloquial, often, humorous) A person who is important or high-ranking.
He once played golf with the grand poobah of their company.
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Regional slang from around the English-speaking world — British, Australian, Irish, Caribbean, Nigerian, Filipino, AAVE, and the hyphenated-English dialects that make the internet sound local.
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(slang, idiomatic) An extremely pompous person.
He once played golf with the grand poobah of their company.
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