Baku

UK: /baˈku/ US: (bu ko̅o̅′)

WordReference Random House Unabridged Dictionary of American English © 2025

Ba•ku  (bu ko̅o̅′), n. 

1. Place Names a city in and the capital of Azerbaijan, in the E part, on the Caspian Sea. 1,022,000;
   with suburbs, 1,550,000.

Collins Concise English Dictionary © HarperCollins Publishers::

Baku / baˈku/ noun

1. the capital of Azerbaijan, a port on the Caspian Sea: important for its extensive oilfields. Pop: 2 373 633 (2015 est)
   Azerbaijani name: Bakı