Collins Russian Dictionary 2nd Edition © HarperCollins Publishers 2000, 1997:
iris [ˈaɪrɪs] (pl irises) n (ANAT) ра́дужная оболо́чка*(гла́за); (BOT) и́рис
* is used to mark translations which have irregular inflections. The Russian-English side of the dictionary gives inflectional information.
Русский: