What is Riddle ?
Riddle is (noun) a puzzling question to which you have to find the answer Here’s a riddle for you: what’s black and white and red all over? (NOTE: The answer is ‘a book’ if you say ‘read’ instead of ‘red’.) (verb) to make a lot of holes in something They riddled the car with bullets.
source: Easier English, Student Dictionary Upper Intermediate Level