On the internet, DW can mean darling wife — a sweet, slightly joking way to talk about your own wife. You see it in older forum posts and blogs, often from men: they write DW instead of 'my wife'. People do not say DW out loud in a shop. Younger people on phones today rarely use it; it feels like early-internet talk. Though actually, DW can stand for other things too, so only read it as 'wife' when the sentence is clearly about someone's partner at home. This entry is that wife meaning.

親愛的老婆（早期英文論壇暱稱）。台灣網路幾乎不這樣寫，一般都直接說「老婆」。