Definitions
1.nounA verbal puzzle, mystery, or other problem of an intellectual nature."Here's a riddle: It's black, and white, and red all over. What is it?"
2.nounAn ancient verbal, poetic, or literary form, in which, rather than a rhyme scheme, there are parallel opposing expressions with a hidden meaning.
3.verbTo speak ambiguously or enigmatically.
4.verbTo solve, answer, or explicate a riddle or question."Riddle me this."