Tolkien creature (3)
'tolkien creature' is the definition.
(orcs are creatures in The Lord of the Rings)
This is the entire clue.
(Other definitions for orc that I've seen before include "Tolkienian creature" , "Ugly creature" , "Fierce goblin" , "fierce monster" , "Sea monster; or Tolkien character" .)
(Other definitions for ent that I've seen before include "Tolkien's Treebeard, for one" , "Tolkien tree-man" .)