also: めーんばんく
main bank; principal bank
In Japanese corporate finance, the bank that serves as a company's primary lender and often holds a close, long-term relationship with the firm.
from English main bank
That company's main bank is MUFG Bank.
The main bank system is one of the characteristics of Japanese corporate finance.
That company's main bank is Sumitomo Mitsui Banking Corporation.
The company received a large loan from its main bank.
Triggered by worsening business results, the company changed its main bank.