Adjective has 2 senses

• next-to-last(s = adj.all) penultimate - next to the last; "the author inadvertently reveals the murderer in the penultimate chapter"; "the figures in the next-to-last column"


• next-to-last(s = adj.all) junior, third-year - used of the third or next to final year in United States high school or college; "a third-year student"; "the junior class"