1. [mid-16C–mid-19C] (UK Und., also bong) a purse.
2. [late 16C–mid-18C] a pocket.
3. [late 16C–mid-19C] a cut-purse.
4. [1950s+] a bribe.
5. [1990s+] a loan.
see nip a bung under nip v.1
[mid-17C–mid-19C] (UK Und.) a cut-purse; a pickpocket.
[1950s] to bribe, to hand over a bribe.