taras noun, Quenya equilvalent of Sindarin barad "a great towering building, (fort, city, castle) tower" (PE17:22), also tarminas. Barad-dûr (Dark Tower) = Quenya Taras Lúna (or Lúnaturco, q.v.)
Quenya
tarminas
tower
tarminas
noun. great towering building (fort/city/castle), tower
taras
great towering building, (fort, city, castle) tower
marto
tower
marto (1) noun "tower" (PE17:66)
turco
tower
turco ("k") (2) noun "tower". In Lúnaturco, Quenya name of Barad-dûr (Dark Tower). Tolkien changed the word turco from turma (PE17:22).
turma
tower
[turma] (2) noun "tower". Tolkien changed this word to turco (#2), q.v. (PE17:22)
marto
noun. tower
tarminas noun "tower" etc. (Sindarin barad); see taras (PE17:22)