dallan : valleys
The Illunse word for valleys (nominative plural) is dallan. Dallan is a last name. Dallan is a unusual masculine first name. Saint Dallán Forgaill was a 6th century Irish poet.
Valleys in Latin is vallis. Valleys in Old English is dena.
My previous Illunse word for valleys was dalla. A small change.
The word for valley is dalle. It remains the same, unchanged.
Here's a link to Valley, in J.R.R. Tolkien's words.