[{"Bold_text": "noun", "List Items": ["any of several small, chiefly Old World songbirds of the subfamily Sylviidae.Compare blackcap(def1) blackcap(def1), reed warbler reed warbler.", "Also called wood warbler wood warbler.any of numerous small New World songbirds of the family Parulidae, many species of which are brightly colored.Compare yellow warbler yellow warbler.", "a person or thing that warbles . warble ."]}]