An Elf of Doriath whose name is translated “Heavy Hand” (S/185), a combination of mâb “hand” (VT47/7) and lung “heavy”. In some late notes it was also translated “with Weighted Hand” (VT47/8).
Conceptual Development: When he first appeared in the earliest Lost Tales, this character’s name was already G. Mablung “Heavy-hand(ed)” (LT2/38, 231), and so it remained throughout Tolkien’s later writings. In The Etymologies from the 1930s, the name Ilk. Mablung was designated Ilkorin, with the same derivation as given above (Ety/LUG¹, MAP). At this time, the Noldorin word for “heavy” was given as N. lhong, which would Sindarize as (ᴺS.) ✱long. This means that the name Mablung might be dialectical Sindarin; see S. lung for further discussion.
mab (Dor. “hand”) + lung (Dor. “heavy”)