Crossword Genius

Sign of fire

Ross

I believe the answer is:

smoke

'sign of fire' is the definition.
(I've seen this in another clue)

This is the entire clue.

(Other definitions for smoke that I've seen before include "Cure (eg, herring)" , "Fume" , "Emit fumes" , "Cure (food) - endanger health!" , "Use a cigarette" .)

I've seen this clue in The New York Times.
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