§ Duil Rewinion ’Hills of the Hunters’ (TI:287)
This place later appears as Taur-na-Faroth (LR:424, SPAR-) and is not part of the drafts for The Lord of the Rings, but I have included it nevertheless.
The first element must be the plural of dôl ’head’ (NDOL-) or dol ’head, hill’ (RC:433), ’head; often applied to hills and mountains’ (Silm.index), S. dol (doll) (PE17:36) by simple i-affection with o > u. However, Noldorin affects o > y and ô > ŷ in monosyllables  in The Etymologies. Ilkorin usually uses the plural suffix -in, but in one case at least a monosyllabic noun is pluralized by i-affection – Ilk. tal ’foot’, pl. tel (TAL-), so that the possibility of an Ilkorin word remains. In the name Emyn Rain (see 2.37) Emyn overwrites the struck through Duil.
In the second word the ending -ion 4.4 is attached to a basic form, which can be deduced as #rawen or #rewin. This is most probably formed from RAW- yielding Q. rá, N. rhaw ’lion’ (compare RAB- yielding Q. ráva, N. rhaw ’wilderness’).
Seen in a larger context a derivation of ’hunter’ form such a root is not new, compare Gnomish rau ’lion’, raust ’hunt, chase’, rautha- ’hunt, chase, pursue’ (GL:65), also Qenya roa ’a wild beast’, rauste ’hunting, preying’, rauta- ’chase, hunt, pursue – extirpate, exterminate’, rawa- ’run, chase’ and so on; stems RAVA, RAWA (QL:79).
The formation of ’hunter’ may be done here via the suffix -in, a cognate to Q. -indo, which can be for instance isolated from melindo ’lover’ (MEL-), thus: *raw-indō > *rewin(n). For this perhaps compare melin (mellyn, meldir) above (1.19).