Tolkien Gateway   azanul is a Khuzdul word that can mean the
adjective "of the shadows, dim", or the while name "Dim-rill"
[edit] Etymology  The word has the stem azan the plural form of
uzn[1] (Root Z-N).  It is possible that the following is the
adjectival ending -ul.  It is also possible that the full word
is Azanûl meaning "Dim rill", containing the noun ûl "Stream,
rill".[2]  [edit] Example  It can be analyzed as (duban) Azanul-
bizar "dim-rill (dale)" or Azan-ûl bizar "dim-rill dale"  [edit]
Other versions  Tolkien intended the word Azanûl to be the full
name of that valley, but settled on Azanulbizar. The
interpretation of the word, as well as that of the bizar have
changed. Tolkien experimented with various interpretations of
the different elements, though the whole was to somehow express
"Dimrill Dale".  [edit] References    1. The Lord of the Rings:
A Reader's Companion p. 269