From Tolkien Gateway
roth (pl. rodhin) is a Doriathrin word meaning "cave".
The word is a descendant form of ?Old Noldorin rōda > rōdh > rōth, deriving from root ROD ("cave").
The word is given in the Etymologies to explain the name Menegroth. In a later source Tolkien gives the Sindarin word groth instead.
roth is an Adûnaic word meaning "foam". Its original sense was "cutting, track" (as in the compounds obroth "fore-cutting" and nadroth "hind-track").
- ↑ 1.0 1.1 1.2 J.R.R. Tolkien, Christopher Tolkien (ed.), The Lost Road and Other Writings, Part Three: "The Etymologies", p. 384
- ↑ J.R.R. Tolkien, Christopher Tolkien (ed.), The War of the Jewels, "Part Four. Quendi and Eldar: Author's Notes to Quendi and Eldar" p. 415 (note 26)
- ↑ 3.0 3.1 J.R.R. Tolkien, Christopher Tolkien (ed.), The Peoples of Middle-earth, "XII. The Problem of Ros", p. 376 (note 22)
- ↑ Helge Fauskanger, Adûnaic: the vernacular of Númenor at Ardalambion (accessed 11 July 2011)