A word, phrase, or name, usually set in boldface or other distinctive type, that serves as the heading for an entry in a dictionary, an encyclopedia, or a similar reference work.是什么意思_A word, phrase, or name, usually set in boldface or other distinctive type, that serves as the heading for an entry in a dictionary, an encyclopedia, or a similar reference work.在线翻译_英语_读音_用法_例句