A towel moistened with water; commonly used to cool down, wipe the body, or clean things.
暑い日は濡れタオルで首筋を冷やすと楽になる。
On hot days, cooling the back of your neck with a wet towel feels better.
作業のあと、濡れタオルで手を拭いてから食事をした。
After working, I wiped my hands with a damp towel before eating.
軽い火傷には濡れタオルを当てて冷やすといい。
For a minor burn, it's good to cool it with a damp towel.