1. a children’s game played with small metal or plastic objects and a ball
2. the small metal or plastic objects used in the game of jacks
3. plural of jack; devices for lifting heavy objects

Examples

• The children played jacks on the playground during recess.
• She scattered the jacks on the ground and bounced the ball.
• The mechanics used several jacks to lift the heavy truck.
• He had two jacks in his poker hand.
• My grandmother taught me how to play jacks when I was seven.
• The garage keeps different sizes of jacks for various vehicles.
• She picked up all ten jacks before the ball bounced twice.