pin-hole pupil

1 definition found

pin-hole pupil - Collaborative International Dictionary of English v.0.48 :

  Pupil \Pu"pil\, n. [F. pupille, n. fem., L. pupilla the pupil of
     the eye, originally dim. of pupa a girl. See Puppet, and
     cf. Pupil a scholar.] (Anat.)
     The aperture in the iris; the sight, apple, or black of the
     eye. See the Note under Eye, and Iris.
     [1913 Webster]
  
     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. --Dunglison.
        [1913 Webster]