Green’s Dictionary of Slang

(Aus./N.Z.) a woman, esp. a promiscuous one.

1965		W. Dick Bunch of Ratbags 269: Don’t ever swear at me again, yuh bloody mole.
1985		in Tracks (Aus.) Jan. 21: No time to recapture the mole from Raymond’s effeminate chatter, no time to bash any poncy date-punchers, I just got out!
1993		B. Moore Lex. of Cadet Lang. 234: usage: ‘Did you see the mole Danny brought to the dining-in night?’.
2017		T. Spicer Good Girl Stripped Bare 8: This is a Queensland expression, used in such circumstances. It’s up there with [...] ‘ya slack mole’, hollered at women from passing cars.