Salt Water
noun
Water with salt in it is salt water. Best not to drink 塩水.
The readings are the kun'yomi vocab readings. You know 塩's from the kanji and you know 水's from the vocab word 水. Combine them together and you have しおみず.
鼻が利く方だと思っていたんだが、どちらが塩水か分からなかった。
I thought I had a good nose, but I couldn't tell which one was salt water.
塩水につけて天日干ししたフグってきっと美味しくなると思うんだけどなあ。
I think puffer fish dipped in salt water and dried in the sun would be pretty tasty.
気温はそんなに高くないけど、日差しは強いから、熱射病対策で塩水を持って行った方がいいんじゃない？
The temperature itself isn't that high, but the sun's rays are really strong, so why don't you take some salt water to prevent heatstroke?