Camel roamed freely in arid environment (9)
I believe the answer is:
dromedary
'camel' is the definition.
(dromedary is a kind of camel)
'roamed freely in arid environment' is the wordplay.
'freely' indicates anagramming the letters.
'in' is an insertion indicator.
'arid environment' becomes 'dry' (I can't justify this - if you can you should believe this answer much more).
'roamed' with letters rearranged gives 'romeda'.
'romeda' put inside 'dry' is 'DROMEDARY'.
(Other definitions for dromedary that I've seen before include "Animal" , "Arabian camel with one hump" , "Kind of camel" , "Desert traveller" , "desert transport" .)