@@@ extended meanings suggested by Fiona Jallings
Noldorin
lith
noun. sand
lith
noun. ash, sand, dust
lithlad
place name. Plain of Ash
lithui
adjective. ash[en]
ast
noun. dust
ast
noun. dust
denethor
masculine name. Denethor
ledh-
verb. to go, to go, *travel, journey
ninn
adjective. slender
ninn
adjective. slender
A noun in The Etymologies of the 1930s glossed “dust” derived from the root ᴹ√ÁS-AT (Ety/ÁS-AT).