Abrasive activity can mean trouble (6)
I believe the answer is:
scrape
'abrasive' is the definition.
(thesaurus)
'activity can mean trouble' is the wordplay.
I cannot really understand how this works, but
'activity' could be 'rape' (rape is a kind of activity) and 'rape' is found within the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for scrape that I've seen before include "Difficult predicament" , "Abrade - economise" , "fine kettle of fish" , "Grate - predicament" , "Graze the skin" .)