The 4th chieftain of the Dúnedain (LotR/1038). The initial element of his name is the prefix ar(a)- “noble” and its final element might be the lenited form vir of mîr “jewel”.
Sindarin
Aravir
noun. royal jewel
aravir
masculine name. Aravir
Elements
Word Gloss ar(a)- “noble, royal, high” mîr “jewel, precious thing, treasure”
ara (prefix “high, noble, royal”) + mîr (“jewel, treasure”)