[narfforc]

In Chapter 10 of The Silmarillion, OF THE SINDAR, it states that, Far to the east were the most ancient dwellings of the Naugrim, but they had delved for themselves great halls and mansions, after the manner of their kind, in the eastern end of Ered Luin. These were Nogrod and Belegost. It goes on to say that greatest of all the mansions of the dwarves was Khazad-dum. The Sindarin name is Hadhodrond which translates as Khazad(dwarf)-hall (rond can be vaulted or arched roof, and dome), also known as the Dwarrowdelf. In the index to The Silmarillion, Christopher includes this:- See Khazad; dum is probably a plurural or collective, meaning 'excavations, halls, mansions.