sistergirl means sister, girlfriend (as a familiar term of address between women). Lexicurio rates it Sui generis — a strength score of 86 out of 100.
Etymology
From sister + girl.
noun
- Sister, girlfriend (as a familiar term of address between women).“"We are all so proud of you, sistergirl! Couldn't you tell at graduation?"”
- A member of a traditional gender role in Australian Aboriginal cultures, resembling trans women.“[…] But older sistergirls do feel a real strong sense, a real responsibility, to look after the little sistergirls because they know they've got a hard time ahead.”