Definition of pork barrel noun from the Oxford Advanced Learner's Dictionary

 

pork barrel

 noun
noun
BrE
 
; NAmE
 
[uncountable](North American English, slang)
 
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local projects that are given a lot of government money in order to win votes; the money that is used pork-barrel projects/spending/politics Word Origin early 20th cent.: from the use of a barrel to keep a reserve supply of meat.
See the Oxford Advanced American Dictionary entry: pork barrel