Enveloping Bambi, entangled inside (7)
I believe the answer is:
ambient
'enveloping' is the definition.
('ambient' can be a synonym of 'enveloping')
'bambi entangled inside' is the wordplay.
'inside' indicates a hidden word.
'AMBIENT' can be found hidden inside 'bambi entangled'.
(Other definitions for ambient that I've seen before include "Surrounding, on all sides - light or temperature" , "to do with circulation" , "Surrounding, temperature perhaps" , "Relating to the immediate surroundings" , "air" .)