Doctor wasted meal, also sleep (9)
I believe the answer is:
dreamland
'sleep' is the definition.
(I've seen this before)
'doctor wasted meal also' is the wordplay.
'doctor' becomes 'dr' (abbreviation).
'wasted' is an anagram indicator.
'also' becomes 'and' (both can mean in addition).
'meal' is an anagram of 'eaml'.
'dr'+'eaml'+'and'='DREAMLAND'
(Other definitions for dreamland that I've seen before include "Sleep; ideal world" , "Nod, perhaps" , "Utopia" .)