A word for “pearl” in the Gnomish Lexicon of the 1910s (GL/24), the equivalent of ᴱQ. marilla and hence derived from the early root ᴱ√MṚÐṚ “grind” (QL/63).
Conceptual Development: In Tolkien’s later writings this early Gnomish word seems to have been replaced by S./N. brith “gravel” (UT/54; Ety/BIRÍT).
marilla noun "pearl" (LT1:265)