A root in The Etymologies of the 1930s glossed “kindle”, with derivatives ᴹQ. narta- and N. nartha- of the same meaning (EtyAC/NARTA). There is a mark above the final A that might be a partially formed macron (NARTĀ), so this “root” may just be an ordinary causative verb “✱make fire” = ᴹ√NAR + ᴹ✶-tā. The root was originally glossed “spear point, gore, triangle” with a derivative [N.] Narthas “gore”, a name that appeared in Lord of the Rings drafts but was eventually replaced by N./S. Naith “angle” (TI/244 note #50).
Middle Primitive Elvish
khor
root. set going, put in motion, urge on
ndū
root. go down, sink, set (of Sun, etc.)
pan
root. place, set, fix in place (especially of wood)
ese(t)
root. precede (forward)
al
prefix. without
gālæ
noun. light
kalat
noun. light
k’lā
noun. light
narta
root. kindle
A root in The Etymologies of the 1930s glossed “set going, put in motion, urge on” with various derivatives like ᴹQ. hóre “impulse” and N. hûr “readiness for action, vigour, fiery spirit”, the latter an element in the name Húrin (Ety/KHOR). It is possible this root was later revised to √HOR “urge, impel, move” (VT41/13); see that entry for details.
Neo-Eldarin: For purposes of Neo-Eldarin, I think it is preferable to retain ᴹ√KHOR and its derivatives from the 1930s, since they are fairly distinct in meaning and the later root √HOR presents a number of phonological difficulties, and I prefer its earlier form √GOR.