Definition of opera queen in English:

opera queen

noun

slang
  • 1A female opera singer, a diva.

  • 2A homosexual man who is fanatical about opera, especially one characterized as being affectedly haughty and over-refined.

Origin

Mid 18th century; earliest use found in Mary Wortley Montagu (bap. 1689, d. 1762), writer.