Lassaraukar
 

This may have been mentioned by someone before, but I am curious about the Lassaraukar. I have found them on the web in a couple of places, but none of them provide a reference as to which work they were mentioned in. I am making a modified D&D campaign and I am compiling a list of monsters from Tolkien and I came accross this. Can anyone help me?

This thread is the only one I found about it here on the 'Downs on a quick search. It seems to be a role-playing invention, rather than a Tolkien invention, though I could be wrong. I've never heard of them before.

I took a quick look into Foster's Complete Guide to Middle-Earth as well as my big German Tolkien Encyclopedia and found no reference to 'lassaraukar' in either, so I would assume that they are indeed an invention and do not originate in Tolkien's writings.

I doubt as the rest here, that there exists some "lassaraukar" in the original writings.
The word himself seems to be generated from "original" Quenya words and perhaps means "Leaf-demons" . Based on the word "lasse", which means leaf and "rauco" (pl. "raukar"), which means "demon".

I doubt, that the word-creation is original from Tolkien, because the using of the word "lasse" (if it should really mean "leaf") in the word "lassaraukar" fits not the Quenya-grammar. The word should have been "lasseraukar" ("Leaf-demons", nominativus) or "lasseoraukar" ("demons of leaf", genetivus).
Or in plural: "lassiraukar" (nom.) or lassionraukar (gen.).

New meaning
 

Translated another name for the Legolas fangirls? :D