Short for プラスマイナスゼロ (purasu mainasu zero).

the Bank of Japan

the Bank of Japan

(archaic, no longer existing in Japan) A savings bank, a thrift. Established under laws passed in 1890 during the Meiji period and in 1920 during the Taishō period. Role was later merged into that of normal banks by a law passed in 1943 during the Shōwa period.

banker (one who conducts the business of banking)

megabank

the World Bank

banknote, paper money

everything

(colloquial) current boyfriend