pu·pil /ˈpjupəl/
  學生,門生,未成年人,瞳孔
  pu·pil /ˈpjupəl/ 名詞
  瞳孔
  Pu·pil, n.
  1. A youth or scholar of either sex under the care of an instructor or tutor.
     Too far in years to be a pupil now.   --Shak.
     Tutors should behave reverently before their pupils.   --L'Estrange.
  2. A person under a guardian; a ward.
  3. Civil Law A boy or a girl under the age of puberty, that is, under fourteen if a male, and under twelve if a female.
  Syn: -- Learner; disciple; tyro. -- See Scholar.
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  Pu·pil n.  Anat. The aperture in the iris; the sight, apple, or black of the eye. See the Note under Eye, and Iris.
  Pin-hole pupil Med., the pupil of the eye when so contracted (as it sometimes is in typhus, or opium poisoning) as to resemble a pin hole.
  pupil
       n 1: a learner who is enrolled in an educational institution
            [syn: student, educatee]
       2: contractile aperture in the iris of the eye
       3: a young person attending school (up through senior high
          school) [syn: schoolchild, school-age child]