Menagerie (3)
I believe the answer is:
zoo
'menagerie' is the definition.
(I know that menagerie can be written as zoo)
This is the entire clue.
(Other definitions for zoo that I've seen before include "Garden to display animals" , "Beastly accommodation" , "Whipsnade, for example" , "Large menagerie" , "Chaotic place" .)