Do housework: some industry needed (4)
I believe the answer is:
dust
'do housework' is the definition.
(I've seen this in another clue)
'some industry needed' is the wordplay.
'some' says the answer is hidden in the clue (some of the parts of the word are used).
'DUST' is hidden in the letters of 'industry needed'.
(Other definitions for dust that I've seen before include "Fine dirt particles" , "Powdery dirt in dry areas" , "Fine powdery material that can be blown about in the air" , "Powdered matter" , "Tiny particles of dirt, skin flakes etc" .)