Ilk. gad n. “fence”
A Doriathrin noun meaning “fence” derived from the root ᴹ√GAT(H) (Ety/GAT(H)), most likely from a primitive form *✶gat-. As pointed out by Helge Fauskanger (AL-Doriathrin/gad), its gloss is a bit peculiar, given that the other derivatives of its root same to have meanings associated with caves. As Mr. Fauskanger suggested, this may represent a transition in Tolkien’s thinking on the meaning of the associated name Doriath: “Land of the Cave” (Ety/GAT(H)) >> “Land of the Fence” (WJ/370).
Reference ✧ Ety/GAT(H) ✧ Dor. gad “fence”
|ᴹ√GAT(H) > gad||[gat] > [gad]||✧ Ety/GAT(H)|