rhû

noun. loud sound, trumpet-sound

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 HSD (HSD).

rhû

noun. loud-sound, trumpet-sound

nella-

verb. to sound (of bells)

rhomru

noun. sound of horns