投とう資し銀ぎん行こうとうしぎんこうMeanings1nouninvestment bankA financial institution that helps companies raise capital, advises on mergers and acquisitions, and engages in trading.彼かれは投とう資し銀ぎん行こうで働はたらいている。He works at an investment bank.投とう資し銀ぎん行こうがその合がっ併ぺいを助じょ言げんした。The investment bank advised on the merger.