Iris
Synonymous with aperture. The iris is the physical mechanism that can be opened or closed to change the size of the aperture. “Irising down” for example, means to close down the iris (go to a higher f-stop).
What's iris?
That depends on which you mean.
Iris can be a womans first name.
Iris can be a beautiful flower.
And Iris can be a part of the eye.
Reply:It's a song by the Goo Goo Dolls.
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