Green’s Dictionary of Slang

jorum n.

[SE jorum, a drinking vessel]

(Aus.) the vagina.

[Scot]Order of the Beggar's Benison and Merryland (1892) 74: [ballad title] ‘Push about the Jorum’.
[Aus]Satirist & Sporting Chron. (Sydney) 18 Mar. 2/3: Not yet is she fit in the ‘jorum’, / To enjoy the old ‘cock-a-lorum’, / She’s too tender for the bull’s rushing, / Too delicate for a man’s pushing.