Meaning of “capital” - Learner’s Dictionary

capital

noun us uk /ˈkæpɪtəl/
The main airport is 15 miles from the capital.Armed troops have regained control of the capital.Rioters looted the capital.Rebel soldiers advanced on the capital.No one was expecting a terrorist attack on the capital.
CITY [ C ]

A2 the most important city in a country or state, where the government is based:

Paris is the capital of France.
MONEY [ U ]

an amount of money that you can use to start a business or to make more money

LETTER [ C ] also capital letter, uk us

A2 a large letter of the alphabet used at the beginning of sentences and names

→ See also block capitals

(Definition of “capital noun” from the Cambridge Learner’s Dictionary © Cambridge University Press)