‽ᴱ√MṚKṚ root. “*juice”
An unglossed root in the Qenya Lexicon of the 1910s with derivatives ᴱQ. mark “ripe juice, sap, ooze, moisture” and ᴱQ. marqa “oozy, juicy, moist” (QL/63); Tolkien marked the root with a “?”. There are no signs of this root in Tolkien’s later writing.
Reference ✧ QL/63