More than enough about maple (5)
I believe the answer is:
ample
'more than enough' is the definition.
(I've seen this before)
'about maple' is the wordplay.
'about' indicates anagramming the letters.
'maple' anagrammed gives 'AMPLE'.
(Other definitions for ample that I've seen before include "Plenteous" , "Big" , "Plentiful; large" , "Quite sufficient, more than enough" , "Spacious" .)