A word for “neck” appearing in notes written around 1967, derived from primitive ✶langō < √LAƷA “cross, pass over, go beyond” (PE17/92). Its primitive form meant “a passage (physical), originally applied to any route or connecting link between two places or large objects, especially such as enabled one to cross or surmount an obstacle: such as a mountain-pass, a ridge of higher land across fen-land, an isthmus etc.” (PE17/91-92). This word was then “later applied to narrower parts of a structure serving to join larger parts, especially the ‘neck’ of men and animals”. The word lango “neck” also appeared in notes from 1965, but there it was derived from √LAG, as opposed to the then-distinct root for “beyond”: √LAŊ (PE17/65).
Conceptual Development: This word dates all the way back to 1920s, where ᴱQ. lango “neck” appeared in Early Qenya Word-lists (PE16/136). It was glossed “neck” in drafts of the ᴱQ. Earendel poem (PE16/100), and as “throat” in the poem itself (MC/216). ᴹQ. lango “throat” appeared in the Declension of Nouns from the early 1930s (PE21/8), but in The Etymologies of the 1930s it was {lango >>} ᴹQ. lanko “throat” from the root ᴹ√LAK “swallow” (Ety/LANK). In later writings, Q. lango “neck” was restored (see above).
Neo-Quenya: For purposes of Neo-Quenya, I think lango can refer to both “neck” and “throat”, since its later derivation was from a word meaning “passage”, and hence could refer the passage from the mouth to the stomach and lungs. For the actual interior mechanism of the throat, however, I’d recommend the neologism ᴺQ. hlunco “pharynx, gullet” < ᴹ√SLUK “swallow”.
acas ("k") noun "neck" (the bony part of the neck, not including throat), pl. axi ("ks") (and so perhaps general stem-form ax-). Also sg. axë (said to be a "later" form apparently replacing acas). The word is also used geographically of rock ridges. (PE17:92)