/ Dictionary / Index B Baku: Meaning and Definition of Find definitions for: Ba•ku Pronunciation: (bu-k'), [key] — n. a city in and the capital of Azerbaijan, in the E part, on the Caspian Sea. 1,022,000; with suburbs, 1,550,000. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: baku (Thesaurus) Bakst Bakunin Related Content Daily Word Quiz: diaphanous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language