Noun | 1. | ![]() U.S.A., United States, United States of America, US, USA, America, the States, U.S. - North American republic containing 50 states - 48 conterminous states in North America plus Alaska in northwest North America and the Hawaiian Islands in the Pacific Ocean; achieved independence in 1776 American capital, capital of the United States, Washington, Washington D.C. - the capital of the United States in the District of Columbia and a tourist mecca; George Washington commissioned Charles L'Enfant to lay out the city in 1791 |
2. | DC - an electric current that flows in one direction steadily electrical energy, electricity - energy made available by the flow of electric charge through a conductor; "they built a car that runs on electricity" |