[Urwen]

Methinks you're correct with that one. I just remembered Huey's line about Melko being chased up a tree by Huan. If the tree in question is an elm, that could be it.

But I'll toss out another guess of my own just in case. Could it be irons? I seem to recall irons being described as 'fell' at least once.


Never mind, disregard that guess. I found a better one.

All eyes were quenched, save those that glared
in Morgoth's lowering brows, and stared
in slowly wandering wonder round,
and slow were in enchantment bound.
Their will wavered, and their fire failed,
and as beneath his brows they paled,
the Silmarils with living light
were kindled clear, and waxing bright
shone like the stars that in the North

Then flaring suddenly they fell

Read the bolded words.