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one's wife
「妻」 has other readings with different meanings.
wife
female
妻さいし子を養うやしなうために働いはたらいている。
I work to support my wife and children.
夫妻ふさいで旅行りょこうに行きいきました。
The couple went on a trip.
彼かれには妻さいし子がいるらしい。
It seems he has a wife and children.