maincity

noun
UK /ˈmeɪnˌsɪti/
US /ˈmeɪnˌsɪti/

The main city is the biggest and most important city in a place.

The train goes from our small town to the maincity in one hour.


OTHER MEANINGS

2. The central or downtown part of a city where most business happens.

We spent the whole afternoon shopping in the maincity.

3. The largest city in a region or country, often where the government sits.

People from all the villages come to the maincity for the big festival.

4. A city that is the most important one for a certain activity or industry.

That port is the maincity for shipping in the whole country.