Capital/ˈkæpɪtl/ Definition 1 of 6Pro Tip 1/3Political Hub The capital is often the location for important political events and landmarks. The President gave a speech at the capital's main square. Pro Tip 2/3Not Always Largest The capital isn't necessarily the largest or most populated city in a country. Canberra is the capital of Australia, not Sydney. Pro Tip 3/3Cultural Significance A capital can have historic and cultural importance beyond its political role. The capital hosts several heritage museums and annual festivals.