Green’s Dictionary of Slang

1. the vagina [rhy. sl. = pit n. (1)].

1890–1904

Farmer & Henley Sl. and Its Analogues.

2. excrement [rhy. sl. = shit n. (1a)].

2001

OnLine Dict. of Playground Sl. 🌐 bob n. ‘I’ve got bob on my shoes!’.