Green’s Dictionary of Slang

bunger n.2

[bung n.6 (2)]

(US) a black eye.

[US]Number 1500 Life In Sing Sing 246: Bunger. A discolored eye.
[US]Eve. World (NY) 15 June n.p.: Thieves’ Latin [...] Bunger — A discolored eye.
[US]G. Henderson Keys to Crookdom 399: Bunger. A black eye.
[US]Monteleone Criminal Sl. (rev. edn).

In phrases

put the bunger on (v.)

(Aus.) in fig. use of ‘black eye’, to put an end to, to terminate (a plan).

[Aus]J. Byrell Lairs, Urgers & Coat-Tuggers 89: [H]is irregularly rostered on-the-road commitments effectively put the bunger on any kind of SP rort.