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English definition of “iris”

iris

noun [C] (EYE)   /ˈɑɪ·rɪs/
the colored, circular part of an eye surrounding the black pupil (= central part): When you say someone is blue-eyed, you are referring to the color of their irises.
(Definition of iris noun (EYE) from the Cambridge Academic Content Dictionary © Cambridge University Press)
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