There are 2 definitions of pupil in English:

pupil1

Syllabification: pu·pil
Pronunciation: /ˈpyo͞opəl
 
/

noun

A student in school.
More example sentences
  • He told delegates the primary school pupil had attacked four teachers.
  • The teachers also taught the pupils to sing one or two songs in a different language.
  • Teachers are seen by pupils not to teach but as a way they can justify themselves at the next inspection.
Synonyms
student, scholar; schoolchild, schoolboy, schoolgirldisciple, follower, student, protégé, apprentice, trainee, novice

Origin

late Middle English (in the sense 'orphan, ward'): from Old French pupille, from Latin pupillus (diminutive of pupus 'boy') and pupilla (diminutive of pupa 'girl').

Definition of pupil in:

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Word of the day envenom
Pronunciation: ɪnˈvɛnəm
verb
put poison on or into; make poisonous

There are 2 definitions of pupil in English:

pupil2

Syllabification: pu·pil
Pronunciation: /
 
ˈpyo͞opəl/

noun

The dark circular opening in the center of the iris of the eye, varying in size to regulate the amount of light reaching the retina.
More example sentences
  • Muscles controlling the iris change the size of the pupil according to light conditions.
  • The pupils do not change size when a bright light is projected into them.
  • It varies the size of the pupil and the thickness of the lens of the eyes to adjust for brightness and for distance.

Origin

late Middle English: from Old French pupille or Latin pupilla, diminutive of pupa 'doll' (so named from the tiny reflected images visible in the eye).

Derivatives

pupillary

Pronunciation: /ˈpyo͞opəˌlerē/
(also pupilary) adjective
More example sentences
  • The cornea, the pupillary opening within the iris, the lens, and the aqueous and vitreous humor combine to form the refractive media of the eye.
  • A stimulant action on the parasympathetic portion of the oculomotor nucleus (third cranial nerve) is responsible for pupillary miosis.
  • She had pendular nystagmus, but pupillary and fundus examination showed nothing abnormal.

Definition of pupil in: