Works, lacking time for paintings (4)

I believe the answer is:

oils

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

I can't explain the remainder of the clue.

(Other definitions for oils that I've seen before include "landscapes, perhaps" , "art exhibits perhaps" , "Painting medium" , "Lubricates; paints" , "Reduces friction" .)

I've seen this clue in The Telegraph.

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