Superabundance (8)
'superabundance' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for plethora that I've seen before include "Cornucopia -- superfluity" , "Abundance" , "Excess, glut" , "surplus" , "Unnecessarily large quantity" .)
'superabundance' is the definition.
(thesaurus)
This is all the clue.
(Other definitions for overflow that I've seen before include "Of water or crowd, spread beyond the usual limits" , "Pipe etc for excess water" , "Pipe to remove excess liquid" , "Drainage outlet" , "Be excessively full" .)