The judiciary plays a crucial role in interpreting the constitution by examining laws and resolving disputes regarding their meaning. Judicial review allows courts to determine the constitutionality of legislation and executive actions, ensuring that they align with constitutional principles. Landmark cases, such as Marbury v. Madison, established the precedent for this power, allowing the judiciary to check the other branches of government. This function helps protect individual rights and maintain the rule of law within the legal framework of a nation, guiding the evolution of constitutional interpretation over time.