summer campaign of the siege of Osaka (1615 CE)
winter campaign of the siege of Osaka (1614 CE)
Osaka Incident (plot by Oi Kentaro and the Liberal Party to support a Korean uprising; 1885)
the dreams of Kyoto, the dreams of Osaka
talk is cheap; it's easier to say than to do; (lit.) building Osaka Castle by talking
financially ruining oneself by overindulging in food and drink (as a fabled tendency of the people of Osaka)
Osaka Securities Exchange
bok choy hybrid (Brassica campestris var. amplexicaulis) (pak choi, bokchoy)
Osaka Conference; meeting held by the leaders of the Meiji Restoration in Osaka to discuss the formation of a representative assembly (January-February, 1875)