noun
baseball club; baseball team
Refers to an organized baseball club, typically at a school, university, or company. Can also mean the team itself.
兄は高校の野球部に入っています。
My older brother is in the high school baseball club.
うちの会社の野球部は毎週土曜日に練習しています。
Our company's baseball team practices every Saturday.
Compound of 野球 (baseball) and 部 (club, department).