ᴹ√KWIG root. “*bow (for shooting)”
An unglossed root in The Etymologies of the 1930s that was the basis of the words ᴹQ. qinga/N. peng “bow (for shooting)” (Ety/KWIG). It was a later iteration of ᴱ√QINGI from the Qenya Lexicon of the 1910s, which was the basis for ᴱQ. qinga and G. cwing “bow” (QL/77; GL/28). In The Etymologies, Tolkien contrasted this root with ᴹ√KU(Ʒ) which was “bow” as a shape. However, in notes from the late 1950s or early 1960s Tolkien contrasted ✶kūma > Q. cúma/S. cû(f) with Q. luva “bow, bight (not for shooting)” < √LUB “bend” (PE17/122), and in the 1950s and 60s S. cû was the normal word for a “shooting bow” in Sindarin, in S. Cúthalion “Strongbow” and S. Laer Cú Beleg “Song of the Great Bow” (S/200, 209).
Given the above, it is possible that Tolkien abandoned ᴹ√KWIG. However, I think it is useful to retain for purposes of Neo-Eldarin as the basis for words having to do with “shoot”, especially since there are still some later derivatives of √KU(Ʒ) that have nothing to do with “shooting”, such as Q. cúna “bent, curved”.
Reference ✧ Ety/KWIG
ᴱ√QINGI root. “*bow”
Reference ✧ QL/77