noun
Jocular slang that literally means 'commoner's bank', likening a pawnshop to a bank for ordinary people. Used humorously or ironically.
See also: 質屋
Before payday, he often resorts to the pawnshop.
あの店は庶民銀行と呼ばれているが、実は質屋だ。
That shop is called a 'commoner's bank', but it's actually a pawnshop.