Judiciary's power refers to the authority and ability of the judicial branch of government to interpret laws, adjudicate disputes, and review actions by the other branches. This power is crucial for maintaining the rule of law and ensuring that no one is above the law, which allows the judiciary to act as a check on both the executive and legislative branches. Through this power, courts can determine the constitutionality of laws and executive actions, which reinforces the balance of power within the government.