noun
tee batting
Baseball practice where the batter hits a ball placed on a tee; used for swing training.
少年野球チームは毎週ティーバッティングの練習をしている。
The youth baseball team practices tee batting every week.
Variant with a middle dot; less common but still seen.
Free batting practice with a pitcher, as opposed to hitting off a tee.
Borrowed from English 'tee batting', referring to batting practice using a batting tee.