Refinement making sense (5)
I believe the answer is:
taste
I believe this clue is a double definition.
'refinement' is the first definition.
(I've seen this before)
'sense' is the second definition.
(taste is one of the five senses)
'making' is the link.
(Other definitions for taste that I've seen before include "Savour; discernment" , "Perceive the flavour" , "Appreciation, discernment" , "Nice distinction felt in the mouth" , "Experience - discrimination" .)