Taunt about healthy tradesman (8)
I believe the answer is:
jeweller
'tradesman' is the definition.
(I've seen this before)
'taunt about healthy' is the wordplay.
'taunt' becomes 'jeer' (jeering is a kind of taunting).
'about' indicates putting letters inside.
'healthy' becomes 'we'll' (similar in meaning).
'jeer' going around 'well' is 'JEWELLER'.
(Other definitions for jeweller that I've seen before include "Trader" , "Watch salesman" , "Gems he flogs" , "Tradesman" , "Dealer in precious stones and metals" .)