blood sister

A girl or woman who has sworn loyalty to another despite not being biologically related. Sally and Rita are such good friends, you rarely see one without the other. They're blood sisters.

Common Names:

Name	Pronounced	Usage
Tiitus	TEE:-toos (Finnish)	Finnish, Estonian
Carol (1)	KER-əl, KAR-əl	English
FlÓRa	-	Hungarian
Joana	-	Portuguese, Catalan
Tylar	TIE-lər	English (Rare)
Hortensius	-	Ancient Roman