Abundance, glut (8)
I believe the answer is:
plethora
I believe this is a double definition.
'abundance' is the first definition.
(I've seen this before)
'glut' is the second definition.
(I've seen this before)
(Other definitions for plethora that I've seen before include "Surfeit" , "Excessively large amount" , "almost too much" , "Profusion" , "Large number" .)