—pupil /ˈpjuː.pəl/
noun [C] (EYE PART)
► F0 the circular black area in the centre of your eye, through which light enters: » Pupils contract in bright light, and dilate in darkness.See picture: pupil 
Thesaurus+: ↑The eye and surrounding area , ↑Eyesight, glasses and lenses , ↑Using the eyes
noun [C] (STUDENT)
A2 a person, especially a child at school, who is being taught:
» a second-year pupil» a primary-school pupil» The school has over 400 pupils.» There is a very relaxed atmosphere between staff and pupils at the school.» Her school report described her as a very promising pupil.Thesaurus+: ↑Students and pupilsF0 someone who is being taught a skill, especially painting or music, by an expert:
» The painting is believed to be by a pupil of Titian.Thesaurus+: ↑Students and pupils• • •
Extra Examples:» The stupid behaviour of one pupil has brought discredit on the whole school.» All pupils are expected to attend school assembly.» The government has pooh-poohed the idea that primary schools will begin to select pupils.» The vast majority of pupils attend state-funded schools.» The artist himself did not paint the backgrounds to his pictures - they were done by his pupils.