хайлмаг • (hajlmag) (Mongolian spelling ᠬᠠᠶᠢᠯᠤᠮᠠᠭ)
хайлах (hajlah, “to melt”) + -маг (-mag). The noun is perhaps a phono-semantic match of a Turkic word. Compare Kazakh қаймақ (qaymaq), Turkish kaymak.