1A state of the north-western US, on the Pacific coast; population 6,549,224 (est. 2008); capital, Olympia. It became the 42nd state in 1889.
2The capital of the US; population 591,833 (est. 2008). It is coextensive with the District of Columbia, a federal district on the Potomac River with boundaries on the states of Virginia and Maryland. Founded in 1790, during the presidency of George Washington, it was planned and built as a capital city. Full name Washington DC.
3An industrial town in NE England, designated as a new town in 1964; population 51,700 (est. 2009).
We take a look at several popular, though confusing, punctuation marks.