A diuretic is a substance which makes your body increase its production of waste fluids, with the result that you need to urinate more often than usual.
例句
Alcohol acts as a diuretic, making you even more dehydrated.酒起著利尿劑的作用，會使你更加脫水。
英英詞典釋義
Noun
1. any substance that tends to increase the flow of urine