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1.
1. Cartographical representation of the state of Tasmania in Australia.
2. Colloquially, referring to the pubic region especially a woman's. Derived from the fact that Tasmania is basically triangular.
1. and 2. Show us ya map o' Tassie!
by Elaine October 22, 2001
 
2.
Tasmania is trapezoidal. An Australian comedian thought its outline looked like the female pudenda with the labia extended.
Show me yer map o' Tassie
by WordWright December 06, 2004