A trough is a long, narrow container used to hold water or feed for animals, commonly found on farms. It can be made from various materials, such as metal, plastic, or wood, and is designed to provide easy access for livestock like cows, horses, and pigs. Troughs help ensure that animals have a steady supply of food and water. In a different context, a trough can also refer to a low point in a graph or data set, such as in economics or meteorology. For example, in an economic cycle, a trough represents the lowest point before recovery begins, indicating a period of reduced activity or growth.