Chernihiv UK /t͡ʃəˈniːhiːv/US /t͡ʃəɹˈnihiv/ noun2 •A port city, the administrative centre of Chernihiv Raion, Chernihiv Oblast, in northern Ukraine, on the Desna River. •A miskrada in Chernihiv Raion, Chernihiv Oblast, Ukraine, founded in October 1932. Seat: Chernihiv.