The term 'Washington Capital' refers to the capital of the U.S. state of Washington, which is Olympia. The crossword solutions for this term are 'ONES' (4 letters) and 'OLYMPIA' (7 letters). Olympia is located in the Puget Sound region of the Pacific Northwest and has been the capital of Washington since 1853. It is the county seat of Thurston County and the home of the Washington State Legislature.