pupil

definition: the contractile aperture in the center of the iris of the eye
example:
speech part: noun
synonyms:
definition: a young person attending school (up through senior high school)
example:
speech part: noun
synonyms: schoolchild school-age child
definition: a learner who is enrolled in an educational institution
example:
speech part: noun
synonyms: student educatee

pupil is explained and pronounced

How pupil is being used?