iris
/ˈaɪrɪs/
noun
- The colored part of the eye that surrounds the pupil and controls how much light enters.
- Her iris is a striking shade of green.
- The doctor examined my iris to check for signs of disease.
- When light is bright, the iris contracts to make the pupil smaller.
- A type of plant with tall, sword-shaped leaves and showy flowers, often purple, blue, yellow, or white.
- Irises are popular in gardens because they are easy to care for.
- She planted purple irises along the garden path.
- The iris blooms in late spring and adds a lot of color to the yard.
- A device with an adjustable opening used in cameras and optical instruments to control the amount of light passing through.
- A camera's iris works like the human eye to manage exposure.
- The telescope's iris was opened wide to capture the faint stars.
- The photographer adjusted the iris to let in more light for the dark scene.