Ornain

Ornain, in the context of J.R.R. Tolkien's legendarium, specifically within his fictional languages, is a Sindarin word meaning "tree." It is a masculine noun. The plural form is ornain as well, though the plural form erain is also acceptable and perhaps more common. Ornain is used as a root element in numerous other Sindarin words related to trees and woods, indicating its foundational importance to the Elven understanding and naming of the natural world. The word is derived from a root that signifies "to stir, arise, spring up," likely reflecting the growth and vitality associated with trees. It is a key lexical item for understanding Elvish poetry and place-names where trees and forests figure prominently.