[{"Bold_text": "noun", "List Items": ["any of several common freshwater ducks to the mallards and teals in the genus Anas,having metallic green flight feathers, a white wing patch, and a buff or white forehead, including A. penelopeof Eurasia and North Africa,A. sibilatrixof South America, and the baldpate,A. americana,of North America.", "Obsolete.a fool."]}]