Glut, overabundance (7)
I believe the answer is:
surfeit
I believe this is a double definition.
'glut' is the first definition.
(I know that glut can be written as surfeit)
'overabundance' is the second definition.
(I know that surfeit is a type of overabundance)
(Other definitions for surfeit that I've seen before include "Excess, glut" , "Overindulge" , "Overindulgence" , "having had quite enough" , "it's more than one needs" .)