Sindarin 

thalos

place name. Torrent

One of the seven streams from which Ossiriand got its name (S/123), and is simply thalos “torrent” used as a name (Ety/STAL). Given the river’s location in Ossiriand, this name might be Nandorin instead.

Conceptual Development: In The Etymologies from the 1930s, the name Thalos was designated Ilkorin, with the derivation given above (Ety/STAL). Like many of the river names in Ossiriand, Tolkien did not give a new etymology of the name after he abandoned the Ilkorin language.

Elements

WordGloss
thalos“torrent”
Sindarin [SI/Thalos; WJI/Thalos] Group: Eldamo. Published by

gorn

noun. valor

Sindarin [Aragorn PM/xii] Group: SINDICT. Published by

thalos Speculative

noun. torrent

Element in

thalas

noun. valour, courage

Elements

WordGloss
STAL“strong”
Sindarin Group: Eldamo - fan adaptations. Published by

gorn

valour

1) #gorn (i **orn), pl. gyrn (i ngyrn = i ñyrn). Isolated from the name Aragorn, ”Kingly Valour” (PM:xii). Note: a homophone is the adjective ”hasty, vigorous, impetuous”. 2) caun (i gaun, o chaun), pl. coen (i choen) if there is a pl. Note: a homophone of caun** means "clamour, outcry, cry, shout".

oll

torrent

1) oll (mountain steam), pl. yll. (The source also cites the archaic form old.) 2) thorod, pl. theryd (archaic thöryd).