It's provocative carrying stone clubs, for example (4,4)
I believe the answer is:
test case
'example' is the definition.
The answer and definition can be both acts as well as being singular nouns.
Maybe they are linked in a way I don't understand?
'it's provocative carrying stone clubs' is the wordplay.
'it's provocative' becomes 'tease' (I can't justify this - if you can you should believe this answer much more).
'carrying' means one lot of letters goes inside another.
'stone' becomes 'st' (abbreviation).
'clubs' becomes 'c' (abbreviation used in card games such as bridge).
'st'+'c'='stc'
'tease' enclosing 'stc' is 'TEST-CASE'.
'for' acts as a link.
Can you help me to learn more?
(Other definitions for test case that I've seen before include "Legal action where the outcome sets a precedent" , "Legal action setting a precedent" , "Cassette containing significant lawsuit" , "Lawsuit seeking decision asprecedent" , "important legal action" .)