Noldorin
anduin
place name. Great River
beleghir
place name. Great River
ann
adjective. long
anann
adverb. long
ann
adjective. long
celon
noun. river
duirro
noun. river-bank
sirion
noun. great river
sîr
noun. river
sîr
noun. river
taen
adjective. long (and thin)
Precursor to the river name Anduin appearing in the Lord of the Rings from the 1940s (RS/410), a combination of beleg “great” and the lenited form of sîr “river”.