Meaning

2 senses
  1. (colloquial, humorous, idiomatic, often)A person who is important or high-ranking.

    He once played golf with the grand poobah of their company.

  2. (idiomatic, slang)An extremely pompous person.

Origin

From Pooh-Bah, the name of a character in Gilbert and Sullivan's comic opera The Mikado (1

From Pooh-Bah, the name of a character in Gilbert and Sullivan's comic opera The Mikado (1885).

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