The term SLOPES SLIDER is a combination of two words, SLOPES and SLIDER. The first word, SLOPES, refers to an inclined surface or a hill, while the second word, SLIDER, is a type of SLED used for sliding down a slope. The crossword solution for this term is SLED, which is a short form of the word 'sledding'. Sledding is a popular winter activity in which people ride on a SLED down a snowy hill or slope.