Gruel is a food made by boiling oats with water or milk.
英汉词典释义
n.
(燕麦片等加牛奶或水煮成的)稀粥
We had gruel for the breakfast.我们早餐吃的是麦片粥。He was writing his report so attentively that he didn’t know the rice gruel in the pot had boiled over.他聚精会神地写报告,连锅里的稀饭煮溢了也不知道。