from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A toy made of a card with an image on each side; when twirled, the images combine
from the GNU version of the Collaborative International Dictionary of English
- n. An optical instrument or toy for showing the persistence of an impression upon the eyes after the luminous object is withdrawn.
from The Century Dictionary and Cyclopedia
- n. An optical apparatus dependent for its effects upon the persistence of retinal impressions.
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