Crossword Genius

Volcanic dust (3)

Ross

I believe the answer is:

ash

'volcanic dust' is the definition.
(I've seen this before)

This is all the clue.

(Other definitions for ash that I've seen before include "Fraxinus" , "Tree; fire residue" , "Remains of conflagration" , "Knotty - - (Ken Dodd)" , "Powdery residue from fire or cigarette" .)

I've seen this clue in the Penny Press, the Newsday, The Sun and The Telegraph.
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