Rough share given to international organisation (5)
I believe the answer is:
uncut
'rough' is the definition.
('uncut' can be a synonym of 'rough')
'share given to international organisation' is the wordplay.
'share' becomes 'cut' (cut is a kind of share).
'given to' means one lot of letters go next to another.
'international organisation' becomes 'un'.
'cut' after 'un' is 'UNCUT'.
(Other definitions for uncut that I've seen before include "Without abridgement" , "Complete, untrimmed" , "the whole pack" , "Not sliced" , "Unexpurgated" .)