A river in Western Númenor (UT/168), probably a compound of núna “western” and -(n)duinë “(large) river”.
Quenya
Nunduinë
west-flow
nunduinë
place name. *West River
Elements
Word Gloss núna “western” -(n)duinë “(large) river”
nuinë
river (of large volume, and liable to flooding)
nuinë noun "river (of large volume, and liable to flooding)". The word is said to be archaic, surviving chiefly in topographical names. It comes from earlier duine, hence appearing in that form in a name like Nunduinë (VT48:30-31), apparently also Anduinë (q.v.) Tolkien struck out the paragraph where nuinë occurs, but the names Nunduinë/Anduinë would suggest that the word as such is conceptually valid.
-duinë
-duinë
-duinë, see nuinë, Nunduinë
núna
western
núna adj. "western" (PE17:18), compare the element #nún- "west(ern)" in certain compounds, such as Núnatani and Nunduinë, q.v. (in the latter word, ú is apparently shortened as u before a consonant cluster). Compare númen.
núna
adjective. western
Element in
andúna
western
andúna adj. "western" (PE17:18)
andúna
adjective. western
Elements
Word Gloss andúnë “sunset, evening, (orig.) going down; west” -a “adjectival suffix”
númenya
western
númenya adj. "western" (NDŪ)
Nunduinë noun *"West-flow", name of a river in Númenor (UT:168). Compare nuinë. Since this comes from earlier duine, the name appears with the d intact following n: The initial element of Nunduinë is #nún, q.v.