pupil apertureOur editors are putting together more complete content — check back in about 20 minutespupil aperturepupil aperture — noun名詞1. a learner who is taught by a teacher1.名詞釋義a learner who is taught by a teacher例句The teacher praised her pupil for the excellent essay.2. the round black hole in the center of the eye2.名詞釋義the round black hole in the center of the eye例句The doctor shone a light into my eye to check the pupil.