The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.
n. The apparently black circular opening in the center of the iris of the eye, through which light passes to the retina. [Middle English, from Old French pupille, from Latin pūpilla, little doll, pupil of the eye (from the tiny image reflected in it); see PUPIL1.] pupi·lar, pupil·lar·y (-pə-lĕr′ē) adj. |
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.