Meaning

• A 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?"

• An ancient verbal, poetic, or literary form, in which, rather than a rhyme scheme, there are parallel opposing expressions with a hidden meaning.

Meaning

• To speak ambiguously or enigmatically.

• To solve, answer, or explicate a riddle or question.

  "Riddle me this."