Soldier of Sauron (3)
I believe the answer is:
orc
'soldier of sauron' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for orc that I've seen before include "Tolkienian monster" , "Sea monster; or Tolkien character" , "Sea-monster" , "Ugly creature" , "Tolkienian creature" .)