Cách sử dụng
A runnel is a small and narrow channel of water or stream that flows on the ground, often carved out by rainwater. You can use the word runnel when you talk about the flow of water in a river, stream, or any other body of water. For example, "The runnel flowed gently down the side of the hill." It is a word that is commonly used when describing the natural landscape or water features in nature.