1. A children's game played by tossing and catching small objects (traditionally knucklebones or metal pieces shaped like them) and a ball, following a sequence of rules.
Usage: Usually used in plural form; Also called 'jacks'; Traditional game, still played in some regions
2. The small objects (typically six to ten metal or plastic pieces with four points) used in the game of jackstones.
Usage: Usually used in plural form; Each piece is sometimes called a 'jack'

Examples

• The children played jackstones on the playground during recess.
• She carefully tossed the jackstones and caught them in her palm.
• A set of jackstones typically includes a small rubber ball and metal pieces.
• My grandmother taught me how to play jackstones when I was young.
• The rules of jackstones vary slightly depending on the region.
• He picked up the jackstones and began the first round of the game.