Labour beginning to examine provocateur's white paper (6,4)
I believe the answer is:
toilet roll
'paper' is the definition.
(toilet roll is a kind of paper)
'labour beginning to examine provocateur's white' is the wordplay.
'labour' becomes 'toil' (synonyms).
'beginning to' says to take the initial letters.
'provocateur's white' becomes 'troll' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
The first letter of 'examine' is 'e'.
'toil'+'e'+'troll'='TOILET-ROLL'
Can you help me to learn more?
(Other definitions for toilet roll that I've seen before include "extensive quantity of paper" , "feature of the smallest room" , "Loo tissue" , "long paper" , "Tissue paper" .)