the main woman singer in an opera performance or an opera company （歌剧演出或歌剧团的）首席女歌唱演员，女主角演员 - (disapproving)
a person who thinks they are very important because they are good at something, and who behaves badly when they do not get what they want 妄自尊大而爱闹脾气者；恃才傲物者
Word Originlate 18th cent.: Italian, literally ‘first lady’.