Green’s Dictionary of Slang

the vagina.

1600		Dekker Shoemakers’ Holiday IV ii: hodge: Why then Sibil, take heede of pricking. sibil: For that let me alone, I haue a tricke in my budget.
1721		in Penkethman’s Jests II 6: The Man of Mettle open’d wide, / His Budget’s Mouth to please her; / Says he this Tool is of’t imploy’d, / To do such Jobbs as these are.
1890–1904		Farmer & Henley Sl. and Its Analogues.