THAUMATROPE

Etymology

Noun

thaumatrope (plural thaumatropes)

A toy made of a card with an image on each side; when twirled, the images combine.

A zoetrope.

Source: Wiktionary

Thau"ma*trope, n. Etym: [Gr. (Opt.)

Definition: An optical instrument or toy for showing the presistence of an impression upon the eyes after the luminous object is withdrawn.

Note: It consists of a card having on its opposite faces figures of two different objects, or halves of the same object, as a bird and a cage, which, when the card is whirled rapidlz round a diameter by the strings that hold it, appear to the eye combined in a single picture, as of a bird in its cage.

Source: Webster’s Unabridged Dictionary 1913 Edition