A noun translated “wizard” and given as an example of a noun with a long vowel in its final syllable that (archaically) uses the declension for a strong-noun (SD/437), the rare class of Strong-Ib nouns. By the time of Classical Adûnaic, it could be declined as an ordinary weak-noun instead. As the proper name Zigûr, it was the Adûnaic name for Sauron.
Adûnaic
zigûr
masculine name. Sauron
zigûr
noun. wizard
The Adûnaic name (or title) for Sauron (SD/250). It simply the word zigûr “wizard” used as a name.