Questions & Answers about La compañera de mi hermana es la delantera del equipo.
Compañera is the feminine form of compañero. It can mean several things depending on context, such as:
- classmate
- colleague / co-worker
- female companion
So in this sentence, la compañera de mi hermana means something like my sister’s female classmate / colleague / companion. The exact meaning depends on the situation.
It does not always mean friend. For friend, Spanish more commonly uses amiga.