Tolkien monster (3)
I believe the answer is:
orc
'tolkien monster' is the definition.
(orcs are creatures in The Lord of the Rings)
This is all the clue.
(Other definitions for orc that I've seen before include "Sea-monster" , "warlike figure" , "Ugly creature" , "Sea monster; or Tolkien character" , "Tolkienian creature" .)