1.NounAny building or complex of buildings in which a legislature meets.
"The state capitol is located smack-dab in the middle of the state's capital."
2.NounAny citadel or complex of buildings similar to the Roman Capitol, particularly Italian and Roman citadels including temples to Jupiter, Juno, and Minerva.
3.NounAlternative form of capitoul (“the former chief magistrates of Toulouse, France”).