Meaning: horse of the lady*
Race/Species: Beasts & Monsters
Dates: TA ?
Aragorn's horse, who was brought to him in Rohan by the Grey Company:
A little apart the Rangers sat...Their horses were strong and of proud bearing, but rough-haired; and one stood there without a rider, Aragorn's own horse that they had brought from the North; Roheryn was his name. There was no gleam of stone or gold, nor any fair thing in all their gear and harness...
(LotR: RotK: Book _ : Chapter II: The Passing of the Grey Company)
* "roch 'horse'... also in Roheryn 'horse of the lady' (cf.heru), Aragorn's horse, which was so called because given to him by Arwen..."
The Silmarillion "Appendix: Elements in Quenya and Sindarin names"