Homonym: pupil (Student)
The term "pupil" refers to the opening in the center of the iris of the eye that allows light to enter. It appears as a dark circle and can change size depending on the amount of light in the environment. In bright light, the pupil constricts to limit the amount of light entering the eye, while in dim light, it dilates to allow more light in for better vision.
In an educational context, a "pupil" is a student who is enrolled in a school or educational institution. Pupils are typically younger individuals who are receiving instruction from teachers. The term is often used interchangeably with "student," although "pupil" is more commonly associated with primary and secondary education.