A female sibling.

A term used to refer to a close female friend or companion.

करीबी मित्र

English Usage: She is like a sister to me; we share everything.

Hindi Usage: वह मेरे लिए बहन की तरह है; हम सब कुछ साझा करते हैं।

To make someone a sister or to treat someone as a sister.

बहन बनाना

English Usage: They sistered each other after going through tough times together.

Hindi Usage: कठिन समय के बाद उन्होंने एक-दूसरे को बहन जैसा बना लिया।