Proust goes round in a daze (6)
I believe the answer is:
stupor
'in a daze' is the definition.
(I've seen this before)
'proust goes round' is the wordplay.
'goes round' indicates anagramming the letters.
'proust' anagrammed gives 'STUPOR'.
(Other definitions for stupor that I've seen before include "result of too much snow?" , "State of being dazed or numb" , "Daze, semi-consciousness" , "Inertia results!" , "Almost unconscious condition caused by drink or drugs" .)