Quote:
Originally Posted by William Cloud Hicklin
-rond meant "vault, vaulted space, dome" or the like from very early. Whether Elrond referred to a vaulted vave or the vault of the firmament, the root remained the same. Cf. Hadhodrond, Nargothrond. Related is Nogrod.
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Yes the letter I looked up reads:
Quote:
Elrond Elros *rondo was a primitive Elvish word for cavern. Cf. Nargothrond (fortified cavern by the R. Narog) Aglarond, etc.
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And Tolkien goes on to say here that Elrond was found in a cave, with Elros found dabbling in the water -- in a cave with a fall of water over the entrance -- with -ros meaning "dew, spray (of fall or fountain".
The explanation intended at this point in time appears to relate to a "simple" cave. In the Etymologies scenario, the root ROD- "cave" produced Quenya and Noldorin words that had to do with "cave" or "hollow, cavernous" -- but in Ilkorin, a word
"rond = domed roof. hence Elrond "vault of heaven"
Despite that -rond is generally more versatile, I mean that the meaning -- or perhaps better, Tolkien's gloss of the name for this specific character, changed, to go along with Elwing's naming. Or let's say, his focus shifted: despite the semantic relationship that hails back to a root, a natural cave is different from the dome of the firmament.
The Elwing scenario actually does "double-duty" in a sense, since the vault of heaven was reproduced in a cave in Elwe's halls.
Anyway, main point: Elwing named them