The Sindarin word for “wall”, an element in several names such as Andram “Long Wall” and Ramdal “Wall’s End” (S/122).
Conceptual Development: The word was N. rham “wall” in The Etymologies of the 1930s, where it was derived from ᴹ✶rambā under the root ᴹ√RAB (Ety/RAMBĀ; EtyAC/RAMBĀ). The root form did not appear in The Etymologies as published in The Lost Road (LR/382), but Carl Hostetter and Patrick Wynne noted the actual root in their Addenda and Corrigenda to the Etymologies (VT46/10). The rh in the 1930s Noldorin form was because initial r was unvoiced in Noldorin, something that was not the case in later Sindarin.
The Gnomish Lexicon of the 1910s had G. bant “wall” appearing between G. bada- “build” and G. bad “building”, so perhaps derived from an early root ✱ᴱ√BATA (GL/21).
A word for a “great wall” in the name Rammas Echor “Great Wall of the Outer Circle” (LotR/750; RC/512), an elaboration of S. ram “wall”. N. ram(m)as also appeared in earlier names for Rammas Echor from Lord of the Rings drafts of the 1940s (WR/288).