The crossword solution for the term 'Santa Suit Soiler' is SOOT, which is a black or dark-colored powdery or flaky substance consisting mainly of amorphous carbon, produced by the incomplete combustion of coal, oil, wood, or other organic matter. It is often found in chimneys and furnaces, and can also be used as an ingredient in paint, rubber, and other products. In the context of Santa Suit Soiler, it is likely referring to the SOOT that accumulates on Santa's suit from the chimney.