Green’s Dictionary of Slang

budger n.

[budge v.2 ]

(UK/US Und.) a drunkard.

[US]Nat. Police Gaz. (NY) 3 June 3/3: [A] sort of chronic ‘budger’ who was absorbing her hard earned salary.
[UK]Barrère & Leland Dict. of Sl., Jargon and Cant.
[UK]Farmer & Henley Sl. and Its Analogues.