Definition of Calhoun, John C. in US English:
Calhoun, John C.
proper nounkalˈho͞onkalˈho͞on
(1782–1850) US politician; full name John Caldwell Calhoun. A South Carolina Democrat, he served as US vice president 1825–32 and in the US Senate 1832–43, 1845–50. He was noted as a champion of states' rights and of slavery.