city in South Carolina, U.S., named for King Charles II of England. In reference to a dance style characterized by side-kicks from the knee, from 1923 (as title of a song), 1925 as a dance, named for the city.

Whether the Charleston (dance) has come to stay or not, it behooves every open-minded hostess and musician to "try it out" anyhow. [Ethel P. Peyser, The Rotarian, July 1926]

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Definitions of Charleston from WordNet
Charleston (n.)
state capital of West Virginia in the central part of the state on the Kanawha river;
Synonyms: capital of West Virginia
Charleston (n.)
a port city in southeastern South Carolina;
Charleston (n.)
an American ballroom dance in syncopated rhythm; popular early in the 20th century;
Charleston (v.)
dance the Charleston;