Green’s Dictionary of Slang

1. the vagina.

1933		C. Isherwood New Country in Exhumations (1966) 207: He’ll get a bit of geography with luck. She’s only a teaser.
1966		Trimble 5000 Adult Sex Words and Phrases.
1972		R.A. Wilson Playboy’s Book of Forbidden Words.

2. the female figure.

1939		P. Cheyney Don’t Get Me Wrong (1956) 7: I would rather four-flush a team of wild alligators outa their lunch-pail than try an’ tell a Mexican momma that I was tired of her geography an’ did not wish to play any more.
1996		(con. 1964-65) B. Thorpe Sex and Thugs and Rock ’n’ Roll 11: I was still mapping her geography and she caught me letching.