家天下 jiā tiān xià <p>◎ <strong>家天下</strong> <span class="pinyin">jiātiānxià</span></p> <p><span class="green">[one family dominates the whole nation;nepotism]</span> 指帝王把国家作为一家的私产,世代相传,后来也指一家人独霸天下</p> 三字成语