Caifum

From irregular Portuguese romanization of the Mandarin pronunciation of Chinese 開封 / 开封 (Kāifēng).

Caifum

1. (obsolete) Alternative form of Kaifeng, a city on the Yellow River in central China, a former national capital.
   • 1771, Encyclopaedia Britannica, 1st ed., Vol. II, p. 7:

     CAIFUM, a city of China, ſituated in the province of Honan, on the river Crocceus, three hundred and fifty miles north-weſt of Nanking...