iris
noun [ C ] uk/ˈaɪ.rɪs/ us/ˈaɪ.rɪs/
(FLOWER)
鸢尾属植物（尤生长于潮湿环境，开蓝色、黄色或白色花，叶细长）
a tall plant that has blue, yellow, or white flowers and long, narrow leaves
(EYE)
虹膜
the coloured circular part of that eye that surrounds the black pupil (= central part)