1) Aromatic European river 2) Aromatic river 3) Baltic feeder 4) Baltic Leader 5) Baltic river 6) Baltic sea feeder 7) Baltic sea tributary 8) Baltic tributary 9) Baltic waterway 10) Baltic-feeding river 11) Baltic-feeding waterway 12) Border river 13) Border river in europe 14) Breslau river 15) River in central Europe Found on https://www.crosswordclues.com/clue/oder
European river flowing north from the Czech Republic to the Baltic Sea (the Neisse River is a tributary); length 885 km/550 mi Found on https://www.encyclo.co.uk/local/21221