Humped mammal (5)
I believe the answer is:
camel
'humped mammal' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for camel that I've seen before include "fawn" , "Saddle animal in desert regions" , "Beast of burden in desert regions" , "Pale brown - animal" , "Humped ungulate" .)