A noun meaning “sedge” derived from the root ᴹ√ESEK (Ety/ESEK), probably from a primitive form ✶eseke*. The middle [e] was lost due to the Ilkorin syncope, and afterwards the [[ilk|[esk] became [esg]]], as suggested by Helge Fauskanger (AL-Ilkorin/esg).
Doriathrin
esg²
noun. rustle, noise of leaves
esg¹
noun. sedge, reed
A rejected noun meaning “rustle, noise of leaves” derived from the root ᴹ√EZGE (Ety/EZGE). Its (rejected) Quenya cognate ᴹQ. eske indicates a primitive form ✶eseke*, despite the root form. If so, middle [e] was lost due to the Ilkorin syncope, and afterwards the [[ilk|[esk] became [esg]]].