Possible Definitions:
1. Pupil (n.) The aperture in the iris; the sight, apple, or black of the eye. See the Note under Eye, and Iris.
2. Pupil (n.) A youth or scholar of either sex under the care of an instructor or tutor.
3. Pupil (n.) A person under a guardian; a ward.
4. Pupil (n.) A boy or a girl under the age of puberty, that is, under fourteen if a male, and under twelve if a female.