Mafia activity produces terrible row (6)
I believe the answer is:
racket
I believe this is a triple definition!
'mafia' is the first definition.
(thesaurus)
'activity' is the second definition.
(racket is a kind of activity)
'produces' acts as a link.
'terrible row' is the third definition.
'racket' can be an answer for 'row' (I've seen this before). I'm unsure of the 'terrible' bit.
Can you help me to learn more?
(Other definitions for racket that I've seen before include "See 1" , "fiddle" , "Loud unpleasant noise" , "Din of the fraudulent moneymaking activity" , "Dodgy business" .)