The term 'worthless part' can be described by four different crossword solutions: DREGS (5 letters), LEES (4 letters), DREG (4 letters), and CHAFF (5 letters). DREGS are the sediment that settles at the bottom of a liquid, such as wine or beer. LEES are the sediment that remains after fermentation of a liquid, such as wine or beer. DREG is another word for sediment, usually referring to the last bit of a liquid. CHAFF is the husks of grains that are separated from the grain during threshing. All of these words refer to the parts of a liquid or grain that are considered worthless or useless.