The term POWER LINE can be summarized by two crossword solutions: EMPERORS (8 letters) and MIGHTMAKESRIGHT (15 letters). EMPERORS is a term used to refer to rulers of an empire, usually with absolute power. MIGHTMAKESRIGHT is an old adage that suggests that those with the most power are right. Together, these two terms suggest that those with the most power have the ability to make decisions that are right for their empire.