Echoriath the mountains that surrounded Gondolin
Harlond Minas Tirith's port, located on the west side of the Anduin and a few miles downstream.
Seven Fathers of the Dwarves = those created by Aul’ and blessed by Il’vatar.
Rosamunda Bolger = Fredegar (Fatty) Bolger's mother.
Riddena-mearc - land of the knights; Rohan
Calembel = Gondorian town in Lamedon, near the River Ciril on the road between Erech and Ethring.
Anghabar = Gondolian iron mine discovered by Maeglin.
Men of Dale were known as the Bardings after the downfall of Smaug and the restoration of the King Under the Mountain.
Pillar of Heaven ( Meneltarma)
N’m = the Edain's name for Finrod
= the River Bruinen, which may be so named because its rapids are so loud they sound like the growl of a bear; though this is mere speculation on my part.
White hand = the emblem of Saruman
D’nharg = the Rohirric refuge that is now translated as 'Dunharrow'.
Rumble = the family name of the widow who looked after Gaffer Gamgee after Sam and Rosie were married.
Southlinch = the type of pipeweed grown in Bree.
Heathertoes - the name of some men of Bree
Shagrat the Uruk Captain of the Tower of Cirith Ungol.
Tark - that's how modor orcs call men of gondor.
K’d-d’kan = the Rohirric name for Hobbits.
N’rnen = inland sea of southern Mordor
Nother N-word Narog = a great river of Beleriand; the Ginglith and Ringwil were its tributaries and it flowed into the Sirion.
Grond = Morgoth's great mace; also the wolf-headed battering-ram at the seige of Minas Tirith, which I reforged as part of the city's replacement doors. Hence my name: In turning Grond, I mastered it for a better use.
Girdley Island was located in the Brandywine River, just above the Brandywine Bridge, which was also called the Bridge of Stonebows.