However, iris also meaning a plant.
|Iris. Source: wikipedia|
Well, as we mention in this article first, the tissue in our eyes get the name iris because different people has different color of iris. Therefore, the Greek word for rainbow, iridos, is borrowed for describing the tissue in our eyes.
How about the plant iris? Isn't all iris blue?
Actually not. Because that famous painting from Van Gogh, we thought all iris are blue. Actually there are many different shades of colors for iris.
|Different colors of iris. Source: wikipedia gallery|
|Source: Wikipedia Gallery|
Wikipedia Iris (anatomy)_Etymology, Iris (plant)