1. a member of the Algonquian people of southern Ontario • Hypernyms: Algonquian, Algonquin 2. a river in southeastern Canada that flows along the boundary between Quebec and Ontario to the Saint Lawrence River near Montreal • Syn: Outaouais, Ottawa river • Instance Hypernyms: river • Part Holonyms: Canada 3. the capital of Canada (located in southeastern Ontario across the Ottawa river from Quebec) • Syn: Canadian capital, capital of Canada • Instance Hypernyms: national capital • Part Holonyms: Ontario