Webster's Revised Unabridged Dictionary · 1913

Pupil

Pupil , noun

[French pupille, n. fem., Latin pupilla the pupil of the eye, originally dim. of pupa a girl. See Puppet, and compare Pupil a scholar.]

(Anatomy) The aperture in the iris; the sight, apple, or black of the eye. See the Note under Eye, and Iris.
Collocations (1)
Pin-hole pupil (Medicine) , the pupil of the eye when so contracted (as it sometimes is in typhus, or opium poisoning) as to resemble a pin hole. — Dunglison

Pupil , noun

[French pupille, n. masc. & fem., Latin pupillus, pupilla, dim. of pupus boy, pupa girl. See Puppet, and compare Pupil of the eye.]

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. — Shakespeare
Tutors should behave reverently before their pupils. — L'Estrange
2.
A person under a guardian; a ward. — Dryden
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.