say it: AH-tuh-wah
ottawa is a noun meaning "a member of the Algonquian people of southern Ontario". It carries 3 recorded senses.
a member of the Algonquian people of southern Ontario
a river in southeastern Canada that flows along the boundary between Quebec and Ontario to the Saint Lawrence River near Montreal
the capital of Canada (located in southeastern Ontario across the Ottawa river from Quebec)
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for ottawa come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.