Danubian adjective 1noun 2forms 3 adjective1 •Pertaining to, or bordering on, the Danube river in Europe. noun2 •(historical) A member of one of the early human cultures which were centred in the Danube basin, such as the Linear Pottery culture or the Vučedol culture.After decades of quiescence, mid-Danubians took the war path as the 400s began. — 2009 •Synonym of Sebastopol (“type of goose”). formsDanubians · more Danubian · most Danubian