foreign wife
Dated term for a wife who is a foreigner, typically from a Western country. Often carries a nuance of exoticism or otherness from a Japanese perspective. Modern usage is rare and may be considered insensitive.
It was rumored in the neighborhood that he took a foreign wife.
外人 is a common but sometimes blunt term for a foreigner; 外人妻 specifically refers to a foreign wife.
Compound of 外人 (foreigner) and 妻 (wife). The reading づま is a rendaku form of つま.