Remaining; royalty (8)
I believe the answer is:
residual
I believe this clue is a double definition.
'remaining' is the first definition.
(I know that remaining can be written as residual)
'royalty' is the second definition.
(I know that residual is a type of royalty)
(Other definitions for residual that I've seen before include "Pertaining to what is left over" , "Left over as a remainder" , "Concerning what is left over" , "Remaining; repeat royalty" , "Remaining at the end" .)