grand poobah

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Also found in: Acronyms.
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grand poobah

The most important or powerful person in a group, organization, business, or movement (e.g., the boss, leader, etc.). I think it sounds like a great idea, but you'll have to ask the grand poobah first.
See also: grand
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
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