The term 'Stuff at the Bottom of the Barrel' is a metaphor for the worst of something. It can refer to the least desirable items, people, or situations. In this crossword, the solutions LEES (4 letters) and DREGS (5 letters) are both words that refer to the same concept. LEES are the sediment that settles at the bottom of a barrel, while DREGS are the last remnants of a liquid. Both terms are used to describe the worst of something.