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Longman Dictionary of Contemporary English
big cheese
noun
EXAMPLES FROM OTHER ENTRIES
▪ One of the big cheeses from NASA gave a speech.
EXAMPLES FROM CORPUS
▪ Evidently he was considered a big cheese here, and was greeted by everyone.
Wiktionary
big cheese

n. (context idiomatic English) A very important figure, especially a high-ranking person in an organization.

WordNet
big cheese

n. an important influential person; "he thinks he's a big shot"; "she's a big deal in local politics"; "the Qaeda commander is a very big fish" [syn: big shot, big gun, big wheel, big deal, big enchilada, big fish, head honcho]

Wikipedia
Big Cheese (magazine)

Big Cheese is an independent music magazine published in the United Kingdom that covers alternative music including rock, punk, and metal. It is circulated monthly.

Big Cheese

A big cheese is a boss or other senior person, particularly in an organization.

Big Cheese or The Big Cheese may also refer to:

  • Big Cheese (magazine), an independent music magazine published in the United Kingdom
  • "Big Cheese" (song), by American rock group Nirvana
  • "Big Cheese", a song by American rock band Bayside from their 2014 album, Cult
  • Bodalla Big Cheese, a visitor attraction in Bodalla, New South Wales
  • Big Cheese, the prime minister of Little Tokyo in the anime Samurai Pizza Cats
  • "The Big Cheese", an episode of animated series Camp Lazlo
  • "The Big Cheese", an episode of animated series Dexter's Laboratory
  • "The Big Cheese", an episode of animated series Foster's Home for Imaginary Friends
  • "The Big Cheese", an episode of animated series Maggie and the Ferocious Beast