Nothing further (2,4)
'nothing further' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for no more that I've seen before include "Never again, that's the end of it" , "Like a dead parrot?" , "Never again, all gone" , "Monroe (anag)" , "Never again, that's the lot" .)
(Other definitions for nomore that I've seen before include "Dead" , "Never again" .)