Ohtar   Warrior
Esquire of Isildur, who brought the shards of Elendil's sword to Imladris.

Oiolaire

Oiolossë   Ever-snow-white
The most common name among the Eldar for Taniquetil, rendered into Sindarin as Amon Uilos; but according to the Valaquenta it was the uttermost tower of Taniquetil.

Oiomúrë
A region of mists near to the Helcaraxë.

Old Ford

Old Forest
The woodland between the River Baranduin and the Barrow-downs.
>>>  Withywindle

Old Forest Road
Ancient road through northern Mirkwood. See Dwarf road.

Old Took
Gerontius Took

Oldbucks
Family of Hobbits in the Shire that provided the first line of Thains.

Olofantur
Older name of the Vala Irmo.

Olórin
A Maia, one of the Istari (Wizards); see Mithrandir, Gandalf, and cf. The Two Towers IV 5: 'Olórin I was in my youth in the West that is forgotten'.

olvar
An Elvish word retained in the speeches of Yavanna and Manwë in Chapter II, meaning 'growing things with roots in the earth'.
>>>  kelvar

Olwë
Leader together with his brother Elwë (Thingol) of the hosts of the Teleri on the westward journey from Cuiviénen; lord of the Teleri of Alqualondë in Aman.

Ondoher
King of Gondor.

Ondolindë   Stone Song
The original Quenya name of Gondolin.

One Ring
See Ruling Ring.

Onodló
Elvish name of the river Entwash.

Onodrim
The Ents.

Orcs
Creatures of Morgoth. Said to be bred out of captured Elves.

Orfalch Echor
The great ravine through the Encircling Mountains by which Gondolin was approached.

Ormal
One of the Lamps of the Valar made by Aulë, Ormal stood in the south of Middle-earth.

Ornendil

Orocarni   Red Mountains
The Mountains of the Far East of Middle-earth.

Orodreth
The second son of Finarfin; warden of the tower of Minas Tirith on Tol Sirion; King of Nargothrond after the death of Finrod his brother; father of Finduilas; slain in the Battle of Tumhalad.

Orodruin   Mountain of Blazing Fire
Volcano in Mordor, in which Sauron forged the Ruling Ring; called also Amon Amarth 'Mount Doom'.

Oromë   Sound of Horns
A Vala, one of the Aratar; the great hunter, leader of the Elves from Cuiviénen, spouse of Vana. The name means 'Horn-blowing' or 'Sound of Horns', cf. Valaróma; in The Lord of the Rings it appears in the Sindarin form Araw.

Oromët
A hill near the haven of Andúnië in the west of Númenor, on which was built the tower of Tar-Minastir.

Orthanc   Forked Height
The Númenórean tower in the Circle of Angrenost.

Osgiliath   Fortress of the Stars
The chief city of ancient Gondor, on either side of the river Anduin.

Ossë
A Maia, vassal of Ulmo, with whom he entered the waters of Arda; friend and instructor of the Teleri.

Ossiriand   Land of Seven Rivers
(These being Gelion and its tributaries flowing down from the Blue Mountains)
The land of the Green-elves. Cf. Treebeard's song in The Two Towers III 4: 'I wandered in Summer in the elm-woods of Ossiriand. Ah! the light and the music in the Summer by the Seven Rivers of Ossir!' See Lindon.

Ost-in-Edhil   Fortress of the Eldar
The city of the Elves in Eregion.

Ostoher
King of Gondor.

Outer Lands
Middle-earth (also called the Hither Lands).

Outer Sea
See Ekkaia.