One-humped camel (9)
I believe the answer is:
dromedary
'one-humped camel' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for dromedary that I've seen before include "Kind of camel" , "One-humped camel bred for riding" , "desert transport" , "Creature" , "Arabian camel with one hump" .)