Desert mount (5)
I believe the answer is:
camel
'desert mount' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for camel that I've seen before include "Humped creature" , "Cud-chewing mammal of desert regions" , "Saddle animal in desert regions" , "Ungulate mammal" , "Humped beast" .)