Milne bruin (4)
I believe the answer is:
pooh
'milne bruin' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for pooh that I've seen before include "Hoop around exclamation of disgust" , "Literary bear" , "12 4's bear" , "A.A. Milne's lover of hunny (sic)" , "that was disgusting!" .)