Noun
(US, uncountable) 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.
(US, countable) The lightweight wiffleball used to play a game of T-ball.
Source: en.wiktionary.orgNo matter how little we think anatomy should matter to one's social and political rights, surely we can't pretend biology doesn't matter in sports. Surely there's a reason we don't let adults play in the t-ball leagues, and a reason most women athletes want their own leagues. Alice Domurat Dreger
Coached t-ball and softball at the former Northwest Little League and Chet Waggoner Little League. Source: Internet
He talked about breaking down gender stereotypes when he placed toys that are stereotypically for boys, like t-ball, into the girl toy bin. Source: Internet
He likes having his dad coach his t-ball team. Source: Internet