A word appearing as ᴱQ. ilin (ilim-) “milk” in the Qenya Lexicon and Poetic and Mythological Words of Eldarissa of the 1910s derived from the early root ᴱ√ILI “shine oily” (QL/42; PME/42).
Neo-Quenya: Qenya “oil” words were derived from other primitive forms in the 1920s (ᴱ✶mḷgo: PE13/139), but I prefer to retain ᴺQ. ilin “milk” for purposes of Neo-Quenya, derived from an Neo-Root ᴺ√ILIM.
A verb appearing as milk- “have, keep, possess” in the Qenya Lexicon of the 1910s under the early root ᴱ√MḶKḶ (QL/62). It also appeared as milki- “possess” in a list of m-roots (QL/63).