expression, noun
the wife; the missus
Casual, somewhat rough way for a husband to refer to his own wife. Often used among close friends or in informal settings. Can sound affectionate or mildly dismissive depending on tone.
うちのやつがまた買い物に行ったよ。
The wife went shopping again.
すみません、うちのやつがうるさくて。
Sorry, my wife is being noisy.
Phrase composed of うち (one's own home/family) + の (possessive particle) + やつ (informal term for a person). The combination literally means 'the person of my house' and is used as a casual, familiar way to refer to one's wife.