A yo-yo is a toy that's made of a string wound around two connected discs. The trick of a yo-yo is to drop the discs to the end of the string and flick them back up into your hand.

When you learn to use a yo-yo, you can do tricks that involve the spinning discs and the string's tension. A yo-yo expert can "walk the dog," where the yo-yo rolls along the floor like a dog on a leash, or go "around the world," making a wide circle in the air with the yo-yo before snapping it back up the string to her hand. The word yo-yo appeared around 1915, possibly from a language of the Philippines.

Definitions of yo-yo
  1. noun
    a toy consisting of a spool that is reeled up and down on a string by motions of the hand
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    type of:
    plaything, toy
    an artifact designed to be played with
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