Son with great taste (6)
I believe the answer is:
sample
'taste' is the definition.
(I know that taste can be written as sample)
'son with great' is the wordplay.
'son' becomes 's' (genealogical abbreviation for son).
'with' is a charade indicator (letters next to each other).
'great' becomes 'ample' (ample can mean great or considerable).
's'+'ample'='SAMPLE'
(Other definitions for sample that I've seen before include "Cross section" , "piece to try" , "Taste(r)" , "A specimen of maples" , "Small part used to represent the whole" .)