Green’s Dictionary of Slang

(Aus.) generic for a Jewish girl or woman.

1901		Bulletin (Sydney) 13 Jul. 12/4: A mixed marriage that has excited much contentious comment among the Jewish relatives of the Rebecca in question and the Anglican family of the young man, was quietly negotiated at the Registrar’s office last week.
1902		Bulletin (Sydney) 5 Jul. 13/4: Of 889 Rachels and Rebekahs who were at home on census night, Isaac and Jacob watched over 781 of them.