- irisA plant of the genus Iris, common in the northern hemisphere, and generally having attractive blooms (See Iris (plant) on Wikipedia.Wikipedia ).
- iridalPertaining to a rainbow.
- Japanese irisA group of iris flower species native to or cultivated in East Asia, particularly in Japan, Korea, China, Russia, and Mongolia. Scientifically, the three primary species are Iris ensata, Iris laevigata, and Iris sanguinea.