Swimsuit
Bathing Suit, Swimwear
noun
Water wear is a swimsuit, bathing suit, or swimwear.
The reading for this one is all kun'yomi vocab reading, but you should know these by now. 着 uses the reading you learned with the vocab word 着る, but this word employs that pesky rendaku, so remember that き becomes ぎ here.
水着、ちゃんと持ってきた？
Did you remember to bring your swimsuit?
あの水着、かわいい！
That swimsuit is cute!
あ、見て。水着がセール中だよ。
Oh, look. The swimsuits are on sale.