[{"Bold_text": "noun", "List Items": ["a metal loop attached to tack, for fastening gear:The wire cutters hung from a dee on her saddle.", "Physics.a hollow electrode for accelerating particles in a cyclotron."]}, {"Bold_text": "noun", "List Items": ["John,1527–1608,English mathematician and astrologer.", "a river in NE Scotland, flowing E into the North Sea at Aberdeen. 90 miles (145 km) long.", "a river in N Wales and W England, flowing E and N into the Irish Sea. About 70 miles (110 km) long.", "a male or female given name."]}]