A noun appearing as G. {doldos >>} dolfa and {doldrin >>} dolmeg in the Gnomish Lexicon of the 1910s, derived from the early root ᴱ√NDOLO “delve” (GL/30). The form G. doldrin “mole” appeared undeleted in the Gnomish Grammar and the Official Name List for the Lost Tales (GG/8; PE13/104).
Neo-Sindarin: For purposes of Neo-Sindarin I would adapt these words as ᴺS. dolph, reconceived of as a derivative of the root ᴹ√NDOL “✱hill, head”, describing these creatures as hill-makers.
Name for the people of Meglin in an early name list (PE13/104), a combination of thlim “race” and doldrin “mole”. Meglin was called the “lord of the house of the Mole” on LT2/175.