Interest shared about a point (8)
I believe the answer is:
dividend
'interest' is the definition.
(thesaurus)
'shared about a point' is the wordplay.
'shared' becomes 'divided' ('divided' can be a synonym of 'shared').
'about' is an insertion indicator.
'a point' becomes 'n' (N is an example).
'divided' enclosing 'n' is 'DIVIDEND'.
(Other definitions for dividend that I've seen before include "Payout on shares" , "Share of profit" , "Football pool winnings" , "Portion of profits paid to a shareholder" , "Return of profit" .)