Pupil

L. pupilla, diminutive of pupa = a doll or little girl. The word puppa is used today to refer to an early stage in the life of an insect. It’s also the root for words like pup, puppet, and pupil in the sense of a young student. The use of this root in naming the pupil of the eye is said to have arisen from the small reflection of objects, seen over the opening of the iris.

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