ᴺS. [G.] omlos n. “chestnut tree, *chestnut” (Category: Tree (other))
Neo-Sindarin: Its etymology was obscure even in the 1910s, but since there are no later alternatives I would retain ᴺS. omlos “chestnut tree” for purposes of Neo-Sindarin. Its initial element would have to be based on something like omb- for the m to have survived; compare to S. imlad < ✶imbi-lătă (PE17/87). Since I don’t see a way to salvage G. omla, I would use ᴺS. omlos for a “chestnut” as well.
Reference ✧ GL/62 ✧ “(horse) chestnut tree”
|omla||“a horse chestnut”|