A more elaborate word for “circle” in The Etymologies of the 1930s, appearing as N. rhingorn as a combination of N. rhinn “circle” and N. corn “round” (Ety/KOR; RIN).
Neo-Sindarin: Many Neo-Sindarin writers adapt this word as ᴺS. ringorn “circle” for purposes of Neo-Sindarin as suggested in HSD (HSD), since the unvoicing of initial *r* to *rh* was a feature of Noldorin of the 1930s but not Sindarin of the 1950s and 60s.
A word in The Etymologies of the 1930s equivalent to ᴹQ. korna “round, globed”, both derived from primitive ᴹ✶kornā under the root ᴹ√KOR “round” (Ety/KOR).
Conceptual Development: In Early Noldorin word-lists of the 1920s ᴱN. corn was a noun meaning “round ball, &c” (PE13/140), and in the Gnomish Lexicon of the 1910s G. corn meant “loaf” (GL/26), probably all based on the early root ᴱ√KORO “be round, roll” (QL/48).