Crossword Genius

The character of air mingled with fog (6)

Ross

I believe the answer is:

figaro

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'the character' is the definition.
(I have seen 'Operatic character ' mean 'figaro' so perhaps 'character' could also mean 'figaro')

I don't understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for figaro that I've seen before include "Beaumarchais hero" , "Barber in Rossini opera" , "The Barber of Seville" , "Mozart's 'Marriage'" , "Hero of Mozart opera" .)

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