T-ball
noun1
US A form of baseball, played by young children, in which the batter hits a ball placed on a tee rather than being thrown by a pitcher.
- His dad found that the store-bought baseball stand broke every time the bat hit the tee, but using a medium sized pylon let the kids play a full game of T-ball without any fuss.
2
US The lightweight wiffleball used to play a game of T-ball.