moldy fig

noun Slang.

a musician or fan who likes traditional jazz or Dixieland rather than modern jazz.
any person or thing that is old-fashioned or conservative.

Origin of moldy fig

An Americanism dating back to 1945–50
Related formsmold·y-fig, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019