Dromedary (5)
I believe the answer is:
camel
'dromedary' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for camel that I've seen before include "Beast of burden in desert regions" , "Saddle animal in desert regions" , "Humped mammal" , "Humped ungulate" , "A ship, some say" .)