Literary Terms????? confused?

I have to do a reading log for The Adventures of Huckleberry Finn for my English class. We have to find a quote and a lit term for each chapter and explain the meaning and importance of it. I'm confused on what to do for the lit terms part. Do I find one word and explain it? or is it a full sentence? a good definition of what a lit term is would be nice too because all the ones ive found don't really help