Chaff refers to the husks and debris that are separated from grains during the harvesting process. It is the lightweight, inedible part of the crop that is removed to obtain the valuable seeds, such as wheat, rice, or barley. Chaff is often considered waste, but it can serve various purposes, including animal bedding or compost. In agriculture, chaff is typically removed using a process called threshing, where the grains are beaten to separate them from their protective coverings. While it may seem like a byproduct, chaff can also be used in some cases as a source of fiber or as a natural mulch in gardens.