To Punish
To Penalize
する verb
When you do a penalty to someone you are trying to punish or to penalize them.
ばっする
The reading is the same as what you learned with the kanji. Just remember that the つ becomes a small っ so I don't have to punish you.
コウイチはTofuguの秘密を漏らした従業員を罰した。
Koichi punished the employees who leaked Tofugu’s secrets.