[{"Bold_text": "verb (used with or without object)", "List Items": ["to move to and fro.", "Nautical.to signal by movements of two flags or the like waved according to a code."]}, {"Bold_text": "noun", "List Items": ["Nautical.the act or process of sending messages by the movements of two flags or the like waved according to a code.", "a message so signaled."]}]