[{"Bold_text": "noun", "List Items": ["a broad, flat limb, as of a seal or whale, especially adapted for swimming.", "Also called fin .one of a pair of paddlelike devices, usually of rubber, worn on the feet as an aid in scuba diving and swimming.", "Theater.a narrow flat hinged or attached at right angles to a larger flat.", "Slang.the hand.", "someone or something that flips ."]}]