Sindarin 

glad

noun. wood

A word for a “wood” in the name Methed-en-Glad “End of the Wood” (UT/153) and possibly also Gladuial “✱Twilight Wood” (WJ/183, 188 note #48). It resembles galadh “tree” and is probably related to it, but it cannot be derived directly from the same root ᴹ√GALAD as that would produce ✱✱gladh. It was either derived from a variant root ✱√GALAT, or was a loan word from Nandorin where the word for “tree” was Nan. galad (MR/182; PE17/50, 60).