Gruel is a food made by boiling oats with water or milk.
英漢詞典釋義
n.
(燕麥片等加牛奶或水煮成的)稀粥
We had gruel for the breakfast.我們早餐吃的是麥片粥。He was writing his report so attentively that he didn’t know the rice gruel in the pot had boiled over.他聚精會神地寫報告,連鍋里的稀飯煮溢了也不知道。