doriath

place name. Land of the Cave

doriathrin

proper name. Doriathrin

ardholen

place name. Hidden Realm

A Noldorin equivalent of Ilk. Garthurian “Fenced Realm, Hidden Realm” appearing in The Etymologies from the 1930s (Ety/GAT(H)). It seems to be a combination of ardh “realm” and the lenited form of dolen “hidden”. The related name Arthoren has a different meaning: “Fenced Realm”

dor

noun. land, dwelling-place, region where certain people live

The form dor in the Etymologies is a misreading, see VT/45. In composition and in toponyms, the word is nevertheless reduced to Dor