N. Lameduin loc.
An earlier name of the river Gilrain on draft maps for Lord of the Rings from the 1940s, derived from the regional name Lamedon (TI/312). It is apparently combination of the first element of that name and the element duin “river”.
See S. Gilrain for further discussion.
References ✧ SDI1/Lameduin; TI/312; TII; WRI