An unglossed root in The Etymologies of the 1930s with derivatives like ᴹQ. yat/N. iaeth “neck” (Ety/YAK). It might also be the basis for later Sindarin S. iach “ford” as in S. Arossiach “Ford(s) of Aros” (S/121, WJ/338).
Middle Primitive Elvish
lag
root. *cut
Derivatives
yak
root. *neck
Derivatives
An unglossed root in The Etymologies of the 1930s with the derivatives ᴹQ. lango “broad sword; prow of a ship” and N. lhang “cutlass, sword” (Ety/LAG), so probably meaning something like “✱cut”.