Crossword Genius

Target of refinement (3)

Ross

I believe the answer is:

oil

'target of refinement' is the definition.
(I've seen this in another clue)

This is the entire clue.

(Other definitions for oil that I've seen before include "Fluid lubricant" , "painting" , "Liquid gold" , "What can be extracted" , "SECOND PART OF 23" .)

I've seen this clue in The Wall Street Journal.
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