Taurelilómëa-tumbalemorna Tumbaletaurëa Lómëanor "Forestmanyshadowed-deepvalleyblack Deepvalleyforested Gloomyland", Quenya elements agglutinated in Entish fashion; this supposedly means something like "there is a black shadow in the deep dales of the forest" (LotR2:III ch. 4; translated in Appendix F under "Ents"; cf. also Letters:308) Earlier (TLT) version in TI:415: Tauretavárëa Tumbalemorna Tumbaletaurëa landatavárë, perhaps *"forest-wooden deepvalleyblack deepvalleyforested wide-wood."
Quenya
tumbalemorna
proper name. deepvalleyblack
taurelilómëa-tumbalemorna tumbaletaurëa lómëanor
Taurelilómëa-tumbalemorna Tumbaletaurëa Lómëanor
Taurelilómëa-tumbalemorna Tumbaletaurëa Lómëanor
forestmanyshadowed-deepvalleyblack deepvalleyforested gloomyland
A descriptive name of Fangorn appearing in the even longer Entish description of that land: Taurelilómëa-tumbalemorna Tumbaletaurëa Lómëanor (LotR/467). The name is a combination of tumbalë “deep valley, depth” and morna “black” (LotR/1131, PE17/81).