7th king of Arnor and 27th king of Gondor (LotR/1038). This name seems to be a compound of tar- “high, king” and the plural form of ondo “stone”.
Quenya
Tarondor
lord of ondor (gondor)
tarondor
masculine name. ?King of Stones
Elements
Word Gloss tar- “high, high; [ᴹQ.] king or queen (in compounds)” ondo “stone (as a material), (large mass of) rock”
Tarondor masc. name, *"Lord of Ondor (Gondor)" (Appendix A)