women's division; girls' section
Refers to a department, club, or section specifically for women or girls, such as in a company, school, or organization.
She works in the women's division of the company.
学校の女子部はバスケットボールが強い。
The girls' section of the school is strong in basketball.
Compound of 女子 (joshi, 'woman, girl') and 部 (bu, 'division, department').