[{"Bold_text": "noun", "List Items": ["a question or statement so framed as to exercise one's ingenuity in answering it or discovering its meaning; conundrum .", "a puzzling question, problem, or matter.", "a puzzling thing or person.", "any enigmatic or dark saying or speech."]}, {"Bold_text": "verb (used without object)", "List Items": ["to propound riddles; speak enigmatically."]}, {"Bold_text": "verb (used with object)", "List Items": ["to pierce with many holes, suggesting those of a sieve:to riddle the target.", "to fill or affect with (something undesirable, weakening, etc.):a government riddled with graft.", "to impair or refute completely by persistent verbal attacks:to riddle a person's reputation.", "to sift through a riddle, as gravel; screen ."]}, {"Bold_text": "noun", "List Items": ["a coarse sieve, as one for sifting sand in a foundry."]}]