Meaning of 妻殺し in Japanese

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Definition of 妻殺し

つま(tsuma) 【妻 ·夫 ·具】

(n) wife
男は妻が車で駅で待つことにした。
The man decided to wait at the station until his wife came.
dear (formerly used by romantically linked men and women to refer to one another)
garnish (esp. one served with sashimi)
embellishment

ころし(koroshi) 【殺し】

(n) murder; killing; murderer
一度殺すと、殺しが楽しくなる。
Once we've killed, we enjoy killing.