ᴱ√MṚÐṚ root. “grind”
A root in the Qenya Lexicon of the 1910s given as ᴱ√MṚŘṚ with derivatives like ᴱQ. mar (mard-) “grit, course grain or powder”, ᴱQ. mard- “grind, pulverize” and ᴱQ. marma “sand” (QL/63). In a list of roots at the end of the M-section, ᴱ√MṚÐṚ was gloss “grind” (QL/63). Early in the M-section Tolkien had the root ᴱ√MARA as a dialectical variation or byform of ᴱ√MṚŘṚ, with the derivative ᴱQ. marilla “pearl” (QL/59). Its cognate G. brithla “pearl” is given in the contemporaneous Gnomish Lexicon (GL/24), and in that document these words served as the base for ᴱQ. Silmaril and its Gnomish equivalent G. Silubrilt (GL/67). There are no signs of this root in Tolkien’s later writing, and Q. Silmaril was given different etymologies later on.
References ✧ QL/59, 63