A word appearing in some 1964 notes on various elements of the mouth, specifically referring to the “interior cavity behind the teeth, containing tongue”, derived from the root √SOŊ (PE17/126). This is likely a technical term, as opposed to the more ordinary word for mouth: Q. anto.
Conceptual Development: An earlier word for the interior of the mouth was ᴱQ. matu “the mouth (inside)” from the Qenya Lexicon of the 1910s under the early root ᴱ√MATA (QL/59).
songa noun "mouth", in the sense of "interior cavity behind the teeth, containing tongue" (PE17:126)