N. †rhû n. “loud sound, trumpet-sound” (Category: Horn, Trumpet)
An archaic noun appearing as N. †rhû “loud sound, trumpet-sound” in The Etymologies of the 1930s, derived from ON. rūma under the root ᴹ√ROM “loud noise, horn-blast” (Ety/ROM), where the ancient m became v and vanished after u. After these sound changes it seems this word was no longer distinct enough, and in modern speech was replaced by rhomru “sound of horns”.
Neo-Sindarin: Since the unvoicing of initial liquids did not occur in Sindarin, many people adapt this word as (still archaic) ᴺS. †rû for purposes of Neo-Sindarin, as suggested in Hiswelókë’s Sindarin Dictionary (HSD).
Reference ✧ Ety/ROM ✧ “loud sound, trumpet-sound”
Element In
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| ON. rūma > †rhû | [rūma] > [rūm] > [r̥ūm] > [r̥ūv] > [r̥ū] | ✧ Ety/ROM |