S. raw n. “wing” (Category: Wing)
The Sindarin word for “wing” (PE17/63) based on the root ᴹ√RAM (Ety/RAM). Its Quenya cognate ráma indicates its ancient vowel ā was long, and this long ā became au (aw) in Sindarin. Meanwhile, the ancient m became v, which then vanished after the diphthong aw: *rāmā > raum(a) > rau(v) > raw.
Conceptual Development: The word G. ram “wing, pinion” from the Gnomish Lexicon of the 1910s was similarly derived (GL/64), but in Gnomish m did not become v.
References ✧ PE17/63
G. ram n. “wing, pinion” (Category: Wing)
References ✧ GL/64, 66; LT2A/Alqarámë