The Sindarin word for “troll” (LotR/1132).

Possible Etymologies: Steve - Ríon and Gilruin suggested it might be a combination of taw “wood” and raug “demon” with au becoming o as usual in polysyllables, since they were originally distortions of Ents. Vyacheslav Stepanov suggested it might have originally been an adjectival form of √TURUK “strong”, with *turukā > torog due to a-affection.