Spiral-horned African antelope (5)
I believe the answer is:
eland
'spiral-horned african antelope' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for eland that I've seen before include "One browses in the African plain" , "Large African deer with short spiral horns" , "Antelope seen by Africans" , "Laden (anag.); antelope" , "African beast" .)