Task mostly incorporating second check for fingerprints? (4)
I believe the answer is:
dust
'check for fingerprints?' is the definition.
(I've seen this in another clue)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for dust that I've seen before include "Unwanted fine powder" , "Clean - dirt" , "Powdery matter" , "Powdery dirt in dry areas" , "Powdered matter" .)