noun Ni·ko·lai Ya·ko·vle·vich [nik-uh-lahy; Russian nyi-kuh-lahy yuh-kaw-vlyuh-vyich] /ˈnɪk əˌlaɪ; Russian nyɪ kʌˈlaɪ yʌˈkɔ vlyə vyɪtʃ/, 1881–1950, Russian composer.