Discrimination makes sense (5)
I believe the answer is:
taste
I believe this clue is a double definition.
'discrimination' is the first definition.
(I know that taste is a type of discrimination)
'sense' is the second definition.
(taste is one of the five senses)
'makes' is the link.
(Other definitions for taste that I've seen before include "Sample, savour" , "A sense; briefly sample" , "Judgment" , "Nice distinction felt in the mouth" , "Discrimination - a sense" .)