Meanings
Usage patterns
〈物〉部に入るto join the ... club
My younger brother plans to join the soccer club.
〈物〉部に配属されるto be assigned to the ... department
The new employee was assigned to the sales department.
〈数〉部発行するto publish/print ... copies
This magazine is published with a run of a hundred thousand copies every month.
〈物〉部を辞めるto quit the ... club
He ended up quitting the tennis club.
Expressions
昼の部daytime; noon period; matinee ごく一部very small fraction; tiny part; very small proportion