Crossword Genius

Utilize a lube nozzle piece in reverse to form dust clouds (7)

Ross

I believe the answer is:

nebulae

I'm a little stuck... Click here to teach me more about this clue!

'dust clouds' is the definition.
'nebulae' can be an answer for 'clouds' (I've seen this before). I am not sure about the 'dust' bit.

'utilize a lube nozzle piece in reverse' is the wordplay.
'piece' indicates a hidden word.
'in reverse' says the letters should be written backwards.
'ealuben' is hidden in the letters of 'utilize a lube nozzle'.
'ealuben' backwards is 'NEBULAE'.

'to form' acts as a link.

Can you help me to learn more?

(Other definitions for nebulae that I've seen before include "Stardust" , "Bright patches in sky from distant galaxies" , "Cloud-like patches in space" , "Interstellar gas clouds" , "Gas or dust clouds in space" .)

I've seen this clue in The Guardian.
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